Contribute correction: MIDI Tracker (unreleased)

  _____      ___    __    __    _____   
 |__  //    / _ \\  \ \\ / //  |  ___|| 
   / //    / //\ \\  \ \/ //   | ||__   
  / //__  |  ___  ||  \  //    | ||__   
 /_____|| |_||  |_||   \//     |_____|| 
 `-----`  `-`   `-`     `      `-----`