I am a sound producer and I was looking for audio apps for my iPad Pro, and this game came up. I wanted to try it and I love the puzzle prospective it gives you, but yet still associating with sound. I haven't been able to stop playing it yet. I have noticed one small glitch though. Whenever you get asked to buy the rest of the levels after the 40th level, it doesn't require you to pay. It just gives it to you. Hopefully you developers can fix this soon so they can be supported to continue on this amazing game.