"Encounter! Wild Pokémon (Legacy Mix) - Pokémon GO" is a high quality rip of "Encounter! Wild Pokémon" from the game Pokémon Go.
Jokes
This rip is a chiptune remix of the original Encounter! Wild Pokémon theme, but then at 0:37 it switches its melody to one part of the Johto Trainer Battle from Pokémon Gold & Silver, and also POKEMON GO SONG!!! cuts in at 0:59 and 2:13.