First off, i absolutely love this appand would recommend it to any audiophile. Making beats and rhythms pretty much instantly is amazing. But, i do believe that there should be improvements to the app as a whole. I own a custom 16:9 27" iMac and the app, when played full screen, doesnt even fit the whole way. There are 2 inch black bars on the left and right sides of my sceen that really need to be fixed. I think this app should at least be made for all Macs, not just MacBooks screens. In addition, every now and then a particle or two will become stuck and then you have to reset the particles to get them to leave. If these are fixed i will be quite pleased. But the app could still use a few more instuments, maybe an electric guitar, violin, more drums, etc. Also a nice enhancement would be the incorporation of backgrounds, not just a black screen. I think backgrounds should be manipulated as well, like a pool of water that ripples or bubbles when interacted with. I know this a little to much to ask for all at once, but i can really see the promise and potential that this app can be. Keep up the great work Joseph!