Right you are, leeneia. MIDI technology, in spite of its drawbacks (due to principal reasons and to being dated), is still an excellent aid for tasks like the ones you are describing. One must of course not mistake MIDI files for "the music".

In a recent thread, our friend Bill D recommended the free Windows program "van Basco's Karaoke player" for such purposes. I tried it out and can second his recommendation, since it is easy to use.

Noteworthy Composer is primarily a notation program. Those who are already familiar with such a program can well use it for that purpose, others may prefer the vBKp mentioned above.

Advanced live MIDI is a topic of its own, with dedicated software products.