NEW: Works with all music players that support multitasking!!! (iPod, Pandora, iHeartRadio, etc.) 04/2011 - Version 1.9.2 will fix the issue with Verizon iPhone users running an iOS version prior to 4.3. Music Sleep Timer is the perfect app for music lovers. It works exactly like the sleep timer on your TV. Just start your music, set the timer and sleep to your favorite tunes. How to use: Open your music player(iPod, Pandora, iHeart Radio, etc.) and begin playing.