『DIGI-LOG CONVERSATION:SONIC ADVENTURE ORIGINAL SOUND TRACK』（デジ－ログ・カンヴァセーション:ソニックアドベンチャー・オリジナル・サウンドトラック）は、1999年1月20日に発売された、ドリームキャスト用ゲームソフト「ソニックアドベンチャー」に使用されているサウンドトラック。
収録曲 Disc 1 Introduction…featuring "Open Your Heart" Welcome to Station Square Event: Strain Boss: CHAOS Ver. 0, 2, 4 Azure Blue World…for Emerald Coast Windy and Ripply…for Emerald Coast BIG fishes at Emerald Coast… and…Fish Hits! Hey You! It's Time to Speed Up!!! Twinkle Cart…for Twinkle Park Pleasure Castle…for Twinkle Park Twinkle Circuit Fakery Way…for Twinkle Park Run Through the Speed Highway…for Speed Highway Goin' Down!?…for Speed Highway At Dawn…for Speed Highway Choose Your Buddy! -Slap Bass ver.- Theme of "CHAO" Letz Get This Party Started…for CHAO Race Entrance Join Us 4 Happy Time…for CHAO Race The Dreamy Stage…for Casinopolis Blue Star…for Casinopolis Dilapidated Way…for Casinopolis Challenge for Another Aim Theme of "Dr.EGGMAN" Egg Mobile…Boss: Egg Hornet Mystic Ruin Windy Hill…for Windy Valley Tornado…for Windy Valley The Air…for Windy Valley Fight for My Own Way…Boss: Event Snowy Mountain…for Icecap Limestone Cave…for Icecap Be Cool, Be Wild and Be Groovy…for Icecap Invincible…No Fear! Choose Your Buddy! -Finger Bass ver.- Disc 2 Mt. Red: a Symbol of Thrill…for Red Mountain Red Hot Skull…for Red Mountain Heartless Colleague…Boss: E-Series Targets Sand Hill Event: Sadness Theme of "TIKAL" Tricky Maze…for Lost World Danger! Chased by Rock…for Lost World Leading Lights…for Lost World Event: The Past Event: Fanfare for "Dr.EGGMAN" Tornado Scramble…for Sky Chase Funky Groove Makes U Hot?…for Options Egg Carrier - A Song That Keeps Us on The Move ZERO The Chase-master…Boss: Eggman Robot -ZERO- Skydeck A Go! Go!…for Sky Deck General Offensive…for Sky Deck Theme of "E-102γ" Crazy Robo…Boss: E-101R Bad Taste Aquarium…for Hot Shelter Red Barrage Area…for Hot Shelter Danger Is Imminent Sweet Punch…for Hedgehog Hammer Militant Missionary…Boss: Egg Walker & Egg Viper Mechanical Resonance…for Final Egg Crank the Heat Up!!…for Final Egg Boss: CHAOS Ver. 6 Calm After the Storm…Egg Carrier -the ocean- Event: Unbound Perfect CHAOS Revival!…Boss: Perfect CHAOS Event: Good-bye! Will You Continue? Open Your Heart -Main Theme of "SONIC Adventure"-
ラインナップ 作詞 Takahiro Fukuda(Disc1 - 1 / Disc2 - 33)瀬上純(Disc 2 - 33)
作曲 瀬上純(Disc1 - 1 , 2 , 4~7 , 9~12 , 14 , 16 , 17 , 23~26 , 28~32 , 34~36 / Disc2 - 2 , 3 , 13 , 15~17 , 20 , 26 , 27 , 32 , 33)瀬津丸勝(Disc1 - 2 / Disc2 - 11 , 12 , 22 , 24)床井健一(Disc1 - 3 , 8 , 22 , 34 / Disc2 - 1 , 4 , 8~10 , 14 , 17 , 21 , 24 , 25 , 28~30 , 33)熊谷文恵(Disc1 - 13 , 15 , 18~21 , 27 , 33 / Disc2 - 5~7 , 14 , 18 , 19 , 23 , 31)
編曲 瀬上純(Disc1 - 1 , 2 , 4~7 , 9~12 , 14 , 16 , 17 , 23~26 , 28~32 , 34~36 / Disc2 - 2 , 3 , 13 , 15~17 , 20 , 26 , 27 , 32 , 33)床井健一(Disc1 - 3 , 8 , 21 , 22 / Disc2 - 1 , 4 , 8~10 , 14 , 17 , 21 , 24 , 25 , 28~30)熊谷文恵(Disc1 - 13~15 , 18~20 , 27 , 33 / Disc2 - 5~7 , 14 , 18 , 19 , 23 , 31)瀬津丸勝(Disc2 - 11 , 12 , 22)
OPEN YOUR HEART (2-33) 作詞：瀬上純 & Takahiro Fukuda作曲：瀬上純 & 床井健一編曲：瀬上純ヴォーカル：Johnny Gioeliギター：瀬上純ベース：柴田直人ドラムス：本間大嗣