_Artwork.jpg){kind=link}
Cover artwork.
The Kingdom Hearts - III, II.8, Unchained χ & Union χ [Cross] - Original Soundtrack was released on November 11th, 2020, both physically and digitally. The soundtrack contains 161 songs from Kingdom Hearts Unchained χ, Kingdom Hearts Union χ, Kingdom Hearts HD 2.8 Final Chapter Prologue, Kingdom Hearts III, and Kingdom Hearts III Re Mind, with physical copies of the soundtrack forming an 8-CD set.
| Track | Title | Length | Game | Artist | Composer |
| 1 | CHIKARI (KINGDOM Orchestra Instrumental Version) | 4:22 | Kingdom Hearts III | Kaoru Wada | Hikaru Utada |
| 2 | Face My Fears (KINGDOM Orchestra Instrumental Version) | 4:12 | Kingdom Hearts III | Kaoru Wada | Hikaru Utada Skrillex Jason "Poo Bear" Floyd |
| 3 | Dearly Beloved (KINGDOM HEARTS III Version) | 2:35 | Kingdom Hearts III | Yoko Shimomura | Yoko Shimomura Yui Morishita |
| 4 | Dive into the Heart - Destati (Third Inception) | 7:04 | Kingdom Hearts III | Natsumi Kameoka | Yoko Shimomura |
| 5 | Burning Ambition | 1:10 | Kingdom Hearts III | Yoshitaka Suzuki | Yoko Shimomura |
| 6 | Return of the Titans | 0:46 | Kingdom Hearts III | Yoshitaka Suzuki | Yoko Shimomura |
| 7 | Mount Olympus | 4:17 | Kingdom Hearts III | Yoshitaka Suzuki | Yoko Shimomura |
| 8 | Hero's Fanfare | 3:10 | Kingdom Hearts III | Yoshitaka Suzuki | Yoko Shimomura |
| 9 | The Deep End (Rock Titan's Rage) | 4:45 | Kingdom Hearts III | Yoshitaka Suzuki | Yoko Shimomura |
| 10 | Olympus Coliseum (The Shining Summit) | 4:38 | Kingdom Hearts III | Natsumi Kameoka | Yoko Shimomura |
| 11 | Go for It! (Into the Clouds) | 2:22 | Kingdom Hearts III | Natsumi Kameoka | Yoko Shimomura |
| 12 | Titanic Clash | 3:21 | Kingdom Hearts III | Takeharu Ishimoto | Takeharu Ishimoto |
| 13 | Sky of Wonder | 3:30 | Kingdom Hearts III | Yoko Shimomura | Yoko Shimomura |
| 14 | First Flight | 3:11 | Kingdom Hearts III | Tsuyoshi Sekito | Tsuyoshi Sekito |
| 15 | Engage! | 4:23 | Kingdom Hearts III | Tsuyoshi Sekito | Tsuyoshi Sekito |
| 16 | Heart of Mystery | 2:44 | Kingdom Hearts III | Yoko Shimomura | Yoko Shimomura |
| 17 | The Afternoon Streets (KINGDOM HEARTS III Version) | 6:00 | Kingdom Hearts III | Natsumi Kameoka | Yoko Shimomura |
| 18 | Working Together (KINGDOM HEARTS III Version) | 2:44 | Kingdom Hearts III | Natsumi Kameoka | Yoko Shimomura |
| 19 | Pixel Hero | 1:30 | Kingdom Hearts III | Tsuyoshi Sekito | Tsuyoshi Sekito |
| 20 | The Little Chef | 2:19 | Kingdom Hearts III | Tsuyoshi Sekito | Tsuyoshi Sekito |
| 21 | Dearly Beloved (Forest Memory) | 3:04 | Kingdom Hearts III | Yoko Shimomura | Yoko Shimomura |
| 22 | VERUM REX | 1:05 | Kingdom Hearts III | Takeharu Ishimoto | Takeharu Ishimoto |
| 23 | You've Got a Friend in Me (KINGDOM HEARTS III Version) | 4:16 | Kingdom Hearts III | Yoko Shimomura | Randy Newman |
| 24 | Toy Box Jam | 3:21 | Kingdom Hearts III | Yoko Shimomura | Yoko Shimomura |
| 25 | Shrouding Dark Cloud (Gigas Blast) | 3:21 | Kingdom Hearts III | Shotaro Shima | Yoko Shimomura |
| 26 | It's a New Record! | ??? | Kingdom Hearts III | ??? | ??? |
| 27 | The Corrupted (Monstrous Monsters) | ??? | Kingdom Hearts III | ??? | ??? |
| 28 | Sora (Orchestra of Toads) | ??? | Kingdom Hearts III | ??? | ??? |
| 29 | Tension Rising (Angelic Amber) | ??? | Kingdom Hearts III | ??? | ??? |
| 30 | Friendship's Union | ??? | Kingdom Hearts III | ??? | ??? |
| 31 | Skyward Striker | ??? | Kingdom Hearts III | ??? | ??? |
| 32 | Happy Hair Day | ??? | Kingdom Hearts III | ??? | ??? |
| 33 | Swingin' Free | ??? | Kingdom Hearts III | ??? | ??? |
| 34 | Happy Hair Day (Into the Forest Deep) | ??? | Kingdom Hearts III | ??? | ??? |
| 35 | Swingin' Free (Into the Forest Deep) | ??? | Kingdom Hearts III | ??? | ??? |
| 36 | Maximus's Matchup | ??? | Kingdom Hearts III | ??? | ??? |
| 37 | Rowdy Rumble (The Crazy Carriage) | ??? | Kingdom Hearts III | ??? | ??? |
| 38 | Say Cheese! | ??? | Kingdom Hearts III | ??? | ??? |
| 39 | Sunshine Dancer | ??? | Kingdom Hearts III | ??? | ??? |
| 40 | Lanterns in the Sky | ??? | Kingdom Hearts III | ??? | ??? |
| 41 | Tension Rising (Reaper's Revenge) | ??? | Kingdom Hearts III | ??? | ??? |
| 42 | The Lost Princess | ??? | Kingdom Hearts III | ??? | ??? |
| 43 | The Falling | ??? | Kingdom Hearts III | ??? | ??? |
| 44 | Anger Unchained | ??? | Kingdom Hearts III | ??? | ??? |
| 45 | Teardrop of the Sun | ??? | Kingdom Hearts III | ??? | ??? |
| 46 | Shipmeisters' Shanty (KINGDOM HEARTS III Version) | ??? | Kingdom Hearts III | ??? | ??? |
| 47 | Blast Off! (KINGDOM HEARTS III Version) | ??? | Kingdom Hearts III | ??? | ??? |
| 48 | Star Explorer | ??? | Kingdom Hearts III | ??? | ??? |
| 49 | Lock, Load, and Blast! | ??? | Kingdom Hearts III | ??? | ??? |
| 50 | Crossing the Finish Line (KINGDOM HEARTS III Version) | ??? | Kingdom Hearts III | ??? | ??? |
| 51 | Monstropolis Now | ??? | Kingdom Hearts III | ??? | ??? |
| 52 | Monster Smash! | ??? | Kingdom Hearts III | ??? | ??? |
| 53 | Zero Hour (The Chase) | ??? | Kingdom Hearts III | ??? | ??? |
| 54 | Monstropolis Now (Code 72-16) | ??? | Kingdom Hearts III | ??? | ??? |
| 55 | Monster Smash! (Code 72-16) | ??? | Kingdom Hearts III | ??? | ??? |
| 56 | Unforgettable (KINGDOM HEARTS III Version) | ??? | Kingdom Hearts III | ??? | ??? |
| 57 | Dual Hearts | ??? | Kingdom Hearts III | ??? | ??? |
| 58 | Winnie the Pooh (KINGDOM HEARTS III Version) | 5:23 | Kingdom Hearts III | ??? | ??? |
| 59 | Bounce-O-Rama (KINGDOM HEARTS III Version) | 3:03 | Kingdom Hearts III | ??? | ??? |
| 60 | Little Lovely Moments | 2:36 | Kingdom Hearts III | ??? | ??? |
| 61 | Go! Go! Rumble Racer (Pudding Grand Prix) | 2:26 | Kingdom Hearts III | ??? | ??? |
| 62 | Flantastic Flight | 2:59 | Kingdom Hearts III | ??? | ??? |
| 63 | Hand in Hand (Attraction Flow Version) | 2:43 | Kingdom Hearts III | ??? | ??? |
| 64 | Dream Eaters (Link Version) | 2:12 | Kingdom Hearts III | ??? | ??? |
| 65 | 8Bit Smasher (Link Version) | 1:25 | Kingdom Hearts III | ??? | ??? |
| 66 | Savannah Pride (Link Version) | 2:22 | Kingdom Hearts III | ??? | ??? |
| 67 | An Adventure in Atlantica (Link Version) | 2:18 | Kingdom Hearts III | ??? | ??? |
| 68 | Mákaukau? (Link Version) | 2:58 | Kingdom Hearts III | ??? | ??? |
| 69 | Frozen Wonderland | 3:52 | Kingdom Hearts III | ??? | ??? |
| 70 | Miracle on Ice | 3:26 | Kingdom Hearts III | ??? | ??? |
| 71 | Frozen Wonderland (Eternal Winter) | 3:17 | Kingdom Hearts III | ??? | ??? |
| 72 | Miracle on Ice (Eternal Winter) | 2:59 | Kingdom Hearts III | ??? | ??? |
| 73 | Let It Go (Japanese Version) | 3:45 | Kingdom Hearts III | ??? | ??? |
| 74 | Let It Go (From "Frozen") | 3:45 | Kingdom Hearts III | ??? | ??? |
| 75 | Sky High Slider | 4:01 | Kingdom Hearts III | ??? | ??? |
| 76 | The Coolest Contest | 1:32 | Kingdom Hearts III | ??? | ??? |
| 77 | Frozen Heart | 1:17 | Kingdom Hearts III | ??? | ??? |
| 78 | No Surrender! | 3:54 | Kingdom Hearts III | ??? | ??? |
| 79 | True Love | 1:57 | Kingdom Hearts III | ??? | ??? |
| 80 | A Pirate's Adventure | 3:30 | Kingdom Hearts III | ??? | ??? |
| 81 | Flags of Fury | 6:11 | Kingdom Hearts III | ??? | ??? |
| 82 | A Pirate's Freedom | 4:20 | Kingdom Hearts III | ??? | ??? |
| 83 | Winds of Fate | 4:11 | Kingdom Hearts III | ??? | ??? |
| 84 | Flags of Fury (Leviathan Awakened) | 3:31 | Kingdom Hearts III | ??? | ??? |
| 85 | Hearts of Courage | 4:16 | Kingdom Hearts III | ??? | ??? |
| 86 | Eye of the Storm | 3:20 | Kingdom Hearts III | ??? | ??? |
| 87 | The Victorious | 9:26 | Kingdom Hearts III | ??? | ??? |
| 88 | The Encounter (Metal Charge) | 3:10 | Kingdom Hearts III | ??? | ??? |
| 89 | AR (Augmented Rhythm) | 3:41 | Kingdom Hearts III | ??? | ??? |
| 90 | Robot Overdrive | 3:37 | Kingdom Hearts III | ??? | ??? |
| 91 | Heroes' Gathering | 3:53 | Kingdom Hearts III | ??? | ??? |
| 92 | Flash Tracer | 4:14 | Kingdom Hearts III | ??? | ??? |
| 93 | Hero Upgrade | 0:38 | Kingdom Hearts III | ??? | ??? |
| 94 | Data Trace Complete | 1:31 | Kingdom Hearts III | ??? | ??? |
| 95 | Zero Hour (The Rescue) | 3:30 | Kingdom Hearts III | ??? | ??? |
| 96 | Baymax Rebooted | 2:35 | Kingdom Hearts III | ??? | ??? |
| 97 | Aqua (Dark Dive) | 4:00 | Kingdom Hearts III | ??? | ??? |
| 98 | Enter the Darkness (KINGDOM HEARTS III Version) | 5:43 | Kingdom Hearts III | ??? | ??? |
| 99 | Guardians of Light | 7:20 | Kingdom Hearts III | ??? | ??? |
| 100 | The Star Fortress | 3:29 | Kingdom Hearts III | ??? | ??? |
| 101 | THERMOSPHERE (KINGDOM HEARTS III Version) | 6:44 | Kingdom Hearts III | Kenichiro Fukui | Kenichiro Fukui |
| 102 | Stranded Beyond | 4:34 | Kingdom Hearts III | Yoko Shimomura | Yoko Shimomura |
| 103 | Dive into the Heart - Destati (Third Revival) | 5:30 | Kingdom Hearts III | Shotaro Shima | Yoko Shimomura |
| 104 | Graveyard Labyrinth | 5:05 | Kingdom Hearts III | Yoko Shimomura | Yoko Shimomura |
| 105 | Rise of the Union | 3:04 | Kingdom Hearts III | Yoshiki Nakamura | Yoko Shimomura |
| 106 | Forze Del Male (Dark Riku) | 5:40 | Kingdom Hearts III | Yoshitaka Suzuki | Yoko Shimomura |
| 107 | Organization XIII (Mark of Fate) | 4:32 | Kingdom Hearts III | Yoko Shimomura | Yoko Shimomura |
| 108 | Dawn of Hope | 4:21 | Kingdom Hearts III | Yoko Shimomura | Yoko Shimomura |
| 109 | Chains to Bonds | 1:31 | Kingdom Hearts III | Yoshiki Nakamura | Yoko Shimomura |
| 110 | Roxas's Return | 2:36 | Kingdom Hearts III | Shotaro Shima | Yoko Shimomura |
| 111 | Hearts as One | 4:31 | Kingdom Hearts III | Shotaro Shima | Yoko Shimomura |
| 112 | Forza Finale | 7:28 | Kingdom Hearts III | Yasunori Nishiki | Yoko Shimomura |
| 113 | Scala ad Caelum | 4:14 | Kingdom Hearts III | Yoko Shimomura | Yoko Shimomura |
| 114 | Edge of Existence | 3:17 | Kingdom Hearts III | Yoko Shimomura | Yoko Shimomura |
| 115 | Replicas | 5:06 | Kingdom Hearts III | Takeharu Ishimoto | Takeharu Ishimoto Yoko Shimomura |
| 116 | Critical Crossroad | 6:17 | Kingdom Hearts III | Takeharu Ishimoto | Takeharu Ishimoto Yoko Shimomura |
| 117 | True Darkness | 3:06 | Kingdom Hearts III | Yoko Shimomura | Yoko Shimomura |
| 118 | Dark Domination | 5:33 | Kingdom Hearts III | Takeharu Ishimoto | Takeharu Ishimoto Yoko Shimomura |
| 119 | HIKARI (KINGDOM Tres Orchestra Instrumental Version) | 3:34 | Kingdom Hearts III | Kaoru Wada | Hikaru Utada |
| 120 | Rhapsody in Tres for Piano, Chorus and Orchestra | 12:12 | Kingdom Hearts III | Yoko Shimomura | Yoko Shimomura Takeharu Ishimoto |
| 121 | Epilogue | 3:56 | Kingdom Hearts III | Yoko Shimomura | Yoko Shimomura |
| 122 | Secrets of the Night | 2:07 | Kingdom Hearts III | Yoko Shimomura | Yoko Shimomura |
| 123 | Cavern of Remembrance (KINGDOM HEARTS III Version) | 2:03 | Kingdom Hearts III Re Mind | ??? | ??? |
| 124 | L'Impeto Oscuro (Young Xehanort) | 6:38 | Kingdom Hearts III Re Mind | ??? | ??? |
| 125 | L'Eminenza Oscura I (Ansem) | 6:22 | Kingdom Hearts III Re Mind | ??? | ??? |
| 126 | L'Oscurità dell'Ignoto (Xemnas) | 5:10 | Kingdom Hearts III Re Mind | ??? | ??? |
| 127 | The 13th Dilemma (Xigbar) | 6:21 | Kingdom Hearts III Re Mind | ??? | ??? |
| 128 | The 13th Dilemma (Saïx) | 6:17 | Kingdom Hearts III Re Mind | ??? | ??? |
| 129 | The 13th Struggle (Luxord) | 6:30 | Kingdom Hearts III Re Mind | ??? | ??? |
| 130 | Lord of the Castle (Marluxia) | 6:04 | Kingdom Hearts III Re Mind | ??? | ??? |
| 131 | The 13th Struggle (Larxene) | 5:00 | Kingdom Hearts III Re Mind | ??? | ??? |
| 132 | Dismiss (Terra-Xehanort) | 5:13 | Kingdom Hearts III Re Mind | ??? | ??? |
| 133 | Vector to the Heavens (Xion) | 6:30 | Kingdom Hearts III Re Mind | ??? | ??? |
| 134 | Forze dell'Oscurita (Xehanort) | 5:04 | Kingdom Hearts III Re Mind | ??? | ??? |
| 135 | Key of the Brave | 2:17 | Kingdom Hearts III Re Mind | ??? | ??? |
| 136 | Link to All (Lights of Destiny) | 3:39 | Kingdom Hearts III Re Mind | ??? | ??? |
| 137 | Nachtflügel | 5:41 | Kingdom Hearts III Re Mind | ??? | ??? |
| 138 | Dearly Beloved (Unchained χ Version) | 3:30 | Kingdom Hearts Unchained χ | ??? | ??? |
| 139 | Before the Daylight | 3:21 | Kingdom Hearts Unchained χ | ??? | ??? |
| 140 | Wake Up, World! | 3:35 | Kingdom Hearts Unchained χ | ??? | ??? |
| 141 | Mission Complete! | 0:49 | Kingdom Hearts Unchained χ | ??? | ??? |
| 142 | Dearly Beloved (Union χ Version) | 5:03 | Kingdom Hearts Union χ | ??? | ??? |
| 143 | Hand in Hand (Union χ Version) | 2:57 | Kingdom Hearts Union χ | ??? | ??? |
| 144 | Game Central Station | 3:59 | Kingdom Hearts Union χ | ??? | ??? |
| 145 | The Candy Filled Kingdom | 3:09 | Kingdom Hearts Union χ | ??? | ??? |
| 146 | The Fastest Racer | ??? | Kingdom Hearts Union χ | ??? | ??? |
| 147 | A Nameless Planet | 2:53 | Kingdom Hearts Union χ | ??? | ??? |
| 148 | Hero's Duty Troopers | 2:48 | Kingdom Hearts Union χ | ??? | ??? |
| 149 | Welcome to Niceland | 3:09 | Kingdom Hearts Union χ | ??? | ??? |
| 150 | I'm Gonna Wreck It! | 2:58 | Kingdom Hearts Union χ | ??? | ??? |
| 151 | Dearly Beloved (χ Back Cover Version) | 2:14 | Kingdom Hearts χ Back Cover | ??? | ??? |
| 152 | Passing the Power | 3:51 | Kingdom Hearts χ Back Cover | ??? | ??? |
| 153 | The Foretellers | 3:15 | Kingdom Hearts χ Back Cover | ??? | ??? |
| 154 | Master of Masters | 5:42 | Kingdom Hearts χ Back Cover | ??? | ??? |
| 155 | Hikari (Ray Of Hope Mix) | 5:33 | Kingdom Hearts 0.2 Birth by Sleep -A fragmentary passage- | ??? | ??? |
| 156 | Simple and Clean (Ray Of Hope Mix) | 5:34 | Kingdom Hearts 0.2 Birth by Sleep -A fragmentary passage- | ??? | ??? |
| 157 | The World Within | 2:51 | Kingdom Hearts 0.2 Birth by Sleep -A fragmentary passage- | ??? | ??? |
| 158 | Forest of Thorns | 2:39 | Kingdom Hearts 0.2 Birth by Sleep -A fragmentary passage- | ??? | ??? |
| 159 | Aqua (Mirror Illusion) | 3:39 | Kingdom Hearts 0.2 Birth by Sleep -A fragmentary passage- | ??? | ??? |
| 160 | Wave of Darkness I | 3:23 | Kingdom Hearts 0.2 Birth by Sleep -A fragmentary passage- | ??? | ??? |
| 161 | Wave of Darkness II | 4:38 | Kingdom Hearts 0.2 Birth by Sleep -A fragmentary passage- | ??? | ??? |