One easy option
The easiest and most effective replacement procedure with a Mac is to replace it with a new PC running Windows 10.
Apple Mac's - PC's for beginners.
13 publicly visible posts • joined 2 Sep 2014
"Reg readers are fond of "Maplins" as one of the few remaining outlets that allows electronics hobbyists to browse legacy components, cables, semiconducters, graphics cards and motherboards while scouting out the latest drones, 3D printers and more."
Judging by the comments, it would appear not......
Because they obviously had no real desire to complete the original challenge in full, much too hard.
Download the midi score. Use a Raspberry Pi. Only do part of the total piece and consider that job done.
Maybe when we take a driving test we should get someone else to drive to the end of the road for us and then expect the examiner to take that as the test, job done.