What was the music creation game/app Patrick was talking about?

A couple of weeks, probably months even, back Patrick was talking about a game/app that he got to play that enabled the user to learn how to make music with it very simply. I never caught the name and I have no idea what episode this was in but I remember him saying it was very intuitive and in beta at the time. Does anyone know the name of the game/app?

Your music mention is throwing me off, but i know he mentioned Game Salad a couple of times.

I believe you are talking about Fract.

Is it that one that's made by PixelJunk? 4am.

It was the podcast during/just after GDC 2012, and the game was indeed called Fract or something very similar. Was about learning to play a synthesizer.

The puzzles 3D synthesizer game.