Compact MIDI
From Just Solve the File Format Problem
Compact MIDI is a proprietary variant of MIDI files designed for ringtones on mobile phones, originally created by the Japanese company Faith, Inc. and adopted by NTT DoCoMo and KDDI.[1] Its main rival was Yamaha's Synthetic Music Application Format.[2] Cool MIDI ringtones were a big industry. Laugh all you want, it was the 90's.
