For an unknown reason, an FM synth workstation app known as iYM2151 was pulled off of the App Store. iYM2151 is an 8 track workstation based on the FM chip of the same name (without the i). Not only do we want it back, but we need to get Detune to add features such as Audiobus, MIDI, and WAV export. The problems with other apps such as DXi and FM4 are that they are not multitimbral, and they do not have all the features YM2151 has