Hello. I have downloaded Gears, and I have issue with music during levels - I don't know how to describe it, music is not playing normally, as on my brother's iPod Touch 3g.
It happens to me on 4.3.2 too. But to fix it temporarily, open the game, then go back to the home screen and open it via the multitasking bar (do NOT close the game!). The sounds should play normally until you close the game.