Check it out: Spotify Running, free

This clever app takes its cue from your pace, selecting music to match it — beat by beat. 

Using your smartphone’s built-in accelerometer to record the motion, you can enjoy a non-stop backing track as you run.

And once you’re in sync, your favourite tunes will drive you on and on.

According to experts on the effects of music on exercise, listening to music while running can boost performance by up to 15%.