The reason myself and several others want it is for transposing. As a multi-instrumentalist and specifically, a guitarist, I play in many different tunings and have many guitars at my disposal. However, I may want to learn a song or practice with one in a tuning I don't have on hand at that time. Changing an instruments tuning (especially drastically) can be time consuming at best and harmful to the instrument at worst. Pitch shifting (usually) solves this. The tempo is an excellent thing to have in parallel (and series lol) to this function. Hopefully they will fulfill the request for the pitch shift for loyal users such as myself and the other individuals I've brought to the app.
