[LAU] The rest of midi tracks follow the leading track

I want to implement an idea. In stead of playing along with my wind midi controller the leading track with the rest of midi tracks (being slave of the midi tempo), I would to program another way to play a midi file: playing the lead track generate all the events of the rest of the tracks. In this case the concept of the tempo changes, and need to be calculated continuously to trigger the events. With this idea I will be free to play the melody, and feel how the orchestra (the other tracks) follow me, and not me following the orchestra (play along). Is this a crazy idea? Could be feasible to program? Exist already something similar? I downloaded the source code of the pmidi project (a CLI midi player). Is this a good starting point to implement the job? (sorry, I realise that may be a LAD post is better than a LAU post) Thanks in advance, Joan Quintana