Galeria Musical is a music store that appears in Grand Theft Auto: Vice City, which seemingly "buys and sells used CD's", according to what's written in Spanish under the logo of the shop. There are multiple Galeria Musical stores around Vice City, mainly in Little Havana, yet none of them are accessible to the player or play any role in the storyline, therefore being only part of the scenery.
Galeria Musical is Spanish and Portuguese for Musical Gallery.