Rockstar has released The Music of Grand Theft Auto V soundtrack over on iTunes. The three albums can be bought for $9.99 each, or $24.99 for all three albums consisting of 59 tracks.
Volume 1 contains all the original music created by various artists including Wavves, The Creator, and more. Volume 3 features tracks you may have already heard of from artists like Bootsy Collins, Flying Lotus, and more. Plus there's snippets from all 17 in-game radio stations included.
The album I care about the most is Volume 2, comprised of the original score. This is a first for the series, and just like Max Payne 3's soundtrack these songs are dynamic and responsive to the player's actions within the missions and the open world.