Classical Piano Accompaniments for Practice Tracks

I'm looking for a composer to create 4 short classical piano accompaniments for practice tracks for my online violin course. This is just the beginning of a very large project and I would like to find someone I can work with long term. I would like the accompaniments to be fun, yet classy. The idea is that we want to engage children ages 8 years old an up but at the same time, have them develop a sense of good classical music.

I will need the midi file and the wave files for the project.

The violin parts for the four accompaniments are in the attachment.