A slightly odd company to be putting up an audio visual app, but it is free, so perhaps worth a look. Here’s what they say about it:
Refract is Swarovski’s inspiring new app that lets you create unique audio visual compositions that you can share, edit and play live.
Create a facet by touching the screen three times and see it pulse with color and sound. Add facets and make a beautiful, unique composition in seconds, change their shape and position to control their look and sound. Lose yourself in the experience and discover hidden extras that transform your composition. Share with friends and inspire them to create their own compositions.