Game Boy: Entire "Pokémon" Sounds Collection CD (Japanese: ゲームボーイ「ポケモン」のサウンドがまるごと入って、遊べるCD) is the official soundtrack release for Pokémon Red, Green, and Blue. It contains all of the background music and sound effects used in the games, all of which were composed solely by Junichi Masuda, who is credited in the soundtrack. This includes Pokémoncries and Pokédex entries read by "Dexter", Ash's Pokédex, being the only soundtrack ever released to contain these sounds.
Tracks 1-45 of disc 1 contain the background music used in the games. Tracks 46-98 of disc 1 up to tracks 1-98 of disc 2 are "Dexter"'s enunciation of the Pokédex entries for each one of the 151Pokémon from Generation I. Track 99 of disc 2 plays a techno-style instrumental music; when it's over, the sound effects used in-game are played.