Hello HN! It seems there has been an influx of MIDI projects as of late. I myself also got inspired to work on one last January.<p>I had become frustrated in not being able to read my old sheet music without counting the notes mentally. I thought there had to be an easier way to learn them, I surveyd some apps but none of them felt right to me. So I decided to build one myself and learn some music theory too.<p>I'm quite happy how it turned out, in the end. My sheet-reading has improved substantially although playing and remembering notes is two different things. It works best if you use MIDI but I have tried to make it work without it. With iOS there might be some issues left, dont have an iPhone to really debug it.<p>I'd love to hear feedback and general opinions!