Aura (App Store link) is a $.99 interactive ambient music generator for the iPhone/iPod touch. It lets you sit back and listen or create your own music by using touch and motion.

Check out the video above for a demo of Aura.

If you’ve used Aura, leave a comment below and let us know what you think!

LISTEN MODE

• Aura generates an endless soothing audio and visual experience.
• Seamlessly morphing and evolving.

CREATE MODE

• With Aura anyone can create original melodies by touching the screen.
• Each sound is controlled through pitch, loop length and decay, meaning your music constantly evolves as you dream of new ideas.
• Control the background harmonies or let them evolve independently.