Impressive LR35902 (GB, GBC) Music
For an overview of the chip in audio form, see Retro Game Audio's episode on the Game Boy & Game Boy Color.
This is a chip that had a booming homebrew scene centered around it in the '00s. You can find a lot of good music at battleofthebits.org and chipmusic.org.
Youtube Playlist
Turok (GBC), Turok 2 (GBC), Turok 3 (GBC), Turok: Rage Wars (GBC)
Project S-11 (GBC)
V-Rally
Doki Doki Sasete (GBC)
Metal Masters (added bass?)
The Smurfs (GB), The Smurfs' Nightmare
Xerd no Densetsu II
Tintin: Prisoners of the Sun/Le Temple du Soleil, Tintin in Tibet (GB)
Chikyuu Kaihou Gun: ZAS
Shantae (GBC)
Trip World
TMNT: Fall of the Foot Clan, TMNT 2: Back from the Sewers, TMNT 3: Radical Rescue (GB)
Looney Tunes: Marvin Strikes Back/Looney Tunes Collector: Alert! (GBC)
Robocop (GB)
Jurassic Park (GB), Jurassic Park 2 (GB)
Castlevania II: Belmont's Revenge
Asterix (GB)
Factor 5 MusyX GB Music Sample 1-2 (GBC)
Otto's Ottifanten: Baby Bruno's Nightmare
Das Geheimnis der Happy Hippo-Insel (GBC)
Kid Dracula (GB)
Hugo 2
Donkey Kong Land, DKL 2, DKC
Batman
Castlevania: The Adventure
Blaster Master Jr./Bomber King 2
Asterix & Obelix
Battletoads (GB)(different)
Pop'n Music GB
Sea Battle
Die Maus
UEFA 2000
Ronaldo V-Football/Ronaldo V-Soccer
Spider-Man (GBC), Spider-Man 2: The Sinister Six (GBC)
Spirou (GB)
Mega Man 3 (GB), MM4 (GB), MM5 (GB)
Animorphs (GBC)
Lucky Luke (GB)
Donkey Kong Land 3
Mole Mania
Legend of Zelda: Link's Awakening, Oracle of Seasons, Oracle of Ages
RoboCop (GBC, 2001)
Little Nicky (GBC, guitar samples)
Q*Bert (GBC ver., 2000)
Baby Felix Halloween
Pop'n Music GB Animation Melody & Disney Tunes
Return of the Ninja
Monster Max
Lufia: The Legend Returns
Looney Toons: Martian Alert!
Bomb Jack (GB)
Nemesis II/Gradius: Interstellar Assault
Tony Hawk's Pro Skater 3 (GBC)
Prehistorik Man (GB)
Radikal Bikers (GBC, unreleased)
Final Fantasy Adventure/Seiken Densetsu
Metroid II: Return of Samus
Bionic Commando (GB)
Atlantis: The Lost Empire (GBC)
Lucle (GB)
LEGO Stunt Rally (GBC)
Bubble Ghost (GB)
Operation C (GB)
Batman: Return of the Joker (GB)
Power Quest (GBC)
Parodius Da! (GB)
Gargoyle's Quest (GB)
Skate or Die: Bad 'n Rad (GB)
Tomb Raider (GBC) & Tomb Raider 2: CotS (GBC)
Toki Tori (GBC)
Wacky Races (GBC, unreleased)
Super Mario Land
Test Drive: LM (GBC)
Blue's Clues
X/Ekkusu (GB)
Final Fantasy Legend/SaGa & FF Legend II/SaGa 2 & FF Legend III/SaGa 3
Cosmo Tank
Super Mario Land 2 & SML3: Wario Land (GB)
Ninja Gaiden Shadow
Track & Field (GB)
Jurassic Park 2: The Chaos Continues (GB)
Tetris Plus (GB)
Drymouth (GBC)
Beatmania GB & Beatmania GB2 GM & Beatmania GB Gatcha Mix2
David Beckham Soccer (GBC)
Tiny Toon Adventures 2: Montana's Movie Madness
Action Man: Search for Base X (GBC)
Kirby's Dream Land & Kirby's Dream Land 2
Revelations: The Demon Slayer (GBC)
Q*Bert (GB)
Side Pocket (GB)
DuckTales 2 (GB)
Warlocked (GBC)
Konami Golf
Looney Tunes
Star Ocean: Blue Sphere (GBC)
Pac in Time (GB)
Gremlins 2 (GB)
Infinity (GBC, unreleased)
Megami Tensei Gaiden: Last Bible (GB) & Last Bible 2 (GB)
Best of the rest
Homebrew (WIP):
This is a chip that had a booming homebrew scene centered around it in the '00s. You can find a lot of good music at battleofthebits.org and chipmusic.org.
Youtube Playlist
Turok (GBC), Turok 2 (GBC), Turok 3 (GBC), Turok: Rage Wars (GBC)
Project S-11 (GBC)
V-Rally
Doki Doki Sasete (GBC)
Metal Masters (added bass?)
The Smurfs (GB), The Smurfs' Nightmare
Xerd no Densetsu II
Tintin: Prisoners of the Sun/Le Temple du Soleil, Tintin in Tibet (GB)
Chikyuu Kaihou Gun: ZAS
Shantae (GBC)
Trip World
TMNT: Fall of the Foot Clan, TMNT 2: Back from the Sewers, TMNT 3: Radical Rescue (GB)
Looney Tunes: Marvin Strikes Back/Looney Tunes Collector: Alert! (GBC)
Robocop (GB)
Jurassic Park (GB), Jurassic Park 2 (GB)
Castlevania II: Belmont's Revenge
Asterix (GB)
Factor 5 MusyX GB Music Sample 1-2 (GBC)
Otto's Ottifanten: Baby Bruno's Nightmare
Das Geheimnis der Happy Hippo-Insel (GBC)
Kid Dracula (GB)
Hugo 2
Donkey Kong Land, DKL 2, DKC
Batman
Castlevania: The Adventure
Blaster Master Jr./Bomber King 2
Asterix & Obelix
Battletoads (GB)(different)
Pop'n Music GB
Sea Battle
Die Maus
UEFA 2000
Ronaldo V-Football/Ronaldo V-Soccer
Spider-Man (GBC), Spider-Man 2: The Sinister Six (GBC)
Spirou (GB)
Mega Man 3 (GB), MM4 (GB), MM5 (GB)
Animorphs (GBC)
Lucky Luke (GB)
Donkey Kong Land 3
Mole Mania
Legend of Zelda: Link's Awakening, Oracle of Seasons, Oracle of Ages
RoboCop (GBC, 2001)
Little Nicky (GBC, guitar samples)
Q*Bert (GBC ver., 2000)
Baby Felix Halloween
Pop'n Music GB Animation Melody & Disney Tunes
Return of the Ninja
Monster Max
Lufia: The Legend Returns
Looney Toons: Martian Alert!
Bomb Jack (GB)
Nemesis II/Gradius: Interstellar Assault
Tony Hawk's Pro Skater 3 (GBC)
Prehistorik Man (GB)
Radikal Bikers (GBC, unreleased)
Final Fantasy Adventure/Seiken Densetsu
Metroid II: Return of Samus
Bionic Commando (GB)
Atlantis: The Lost Empire (GBC)
Lucle (GB)
LEGO Stunt Rally (GBC)
Bubble Ghost (GB)
Operation C (GB)
Batman: Return of the Joker (GB)
Power Quest (GBC)
Parodius Da! (GB)
Gargoyle's Quest (GB)
Skate or Die: Bad 'n Rad (GB)
Tomb Raider (GBC) & Tomb Raider 2: CotS (GBC)
Toki Tori (GBC)
Wacky Races (GBC, unreleased)
Super Mario Land
Test Drive: LM (GBC)
Blue's Clues
X/Ekkusu (GB)
Final Fantasy Legend/SaGa & FF Legend II/SaGa 2 & FF Legend III/SaGa 3
Cosmo Tank
Super Mario Land 2 & SML3: Wario Land (GB)
Ninja Gaiden Shadow
Track & Field (GB)
Jurassic Park 2: The Chaos Continues (GB)
Tetris Plus (GB)
Drymouth (GBC)
Beatmania GB & Beatmania GB2 GM & Beatmania GB Gatcha Mix2
David Beckham Soccer (GBC)
Tiny Toon Adventures 2: Montana's Movie Madness
Action Man: Search for Base X (GBC)
Kirby's Dream Land & Kirby's Dream Land 2
Revelations: The Demon Slayer (GBC)
Q*Bert (GB)
Side Pocket (GB)
DuckTales 2 (GB)
Warlocked (GBC)
Konami Golf
Looney Tunes
Star Ocean: Blue Sphere (GBC)
Pac in Time (GB)
Gremlins 2 (GB)
Infinity (GBC, unreleased)
Megami Tensei Gaiden: Last Bible (GB) & Last Bible 2 (GB)
Best of the rest
Homebrew (WIP):