Spring has sprung and a quick trip to the countryside will reveal all manner of hooting, bleating, twittering and lowing. Should you find yourself stuck in the city with nary a birdsong or rustling leaf to lull you to sleep then, why not create your own relaxing soundscape? Ambient Mixer is one such app (for Android and iOS) that allows you to mix and match sound effects including rain, bonfires, birdsong, wind and surf for custom background music. And for those who march to the beat of a different drum there are also wolf howls, thunderstorms and eerie choirs.

http://www.ambient-mixer.com/mobile-download