Visuamusio, created by Japanese interactive design studio Wow, is an iPad app that lets you create musical animations. It combines geometric shapes and synthetic sounds so that users can create their own musical soundtrack with visuals to go with it. There's also a sharing page for users to show off their compositions, and view their creations in a series of sketchbooks

Wow's previous app, addLib, created instant graphic design layouts, so the company's something of a speciliast at making the complex look simple and user-friendly.