Air Gesture Control - https://play.google.com/store/apps/details?id=in.tank.corp.proximity&hl=en allows users to control music by waving your hand.
1. Enable Air Gesture Control
2. Select Music
3. Place and release your hand to PLAY music
4. Wave once to play NEXT song
5. Wave twice to play PREVIOUS song
6. Place and release your hand to PAUSE music
Many people don’t know such a thing is possible on non Galaxy-S4 phone please do spread the word