Attention music industry slime:
A MIDI is not the same as an mp3.
A MIDI file is a sequence of notes, which may or may not play back as intended depending on how many "instruments" the user has available on their system, and even then it's not likely it will play back how the sequencer intended. Also they NEVER have vocals. Ever.
An mp3 is an actual song with actual instruments and actual vocals that plays back exactly as it was encoded no matter what system or player is used.