Hello,
I'm sorry to inform you that unfortunately you map has been
rejected due to the following reasons; Firstly, the build is decent, but could use more block variation, and depth in my opinion, the theme is alright, but we already have a lot of instrumental maps already (For example, Orchestra). My main concern for this submission though, is the parkour. Although the jumps, and length do fit the difficulty you're going for, the parkour has little to no variation in jumps, and blocks.
In the future when submitting and creating maps, please use the official map theme and list here:
https://www.manacube.com/threads/parkour-list-with-theme.20194/, I also recommend using more variation in blocks when creating your parkour, I personally recommend blocks like chests, cake, brewing stands, fences, iron bars/glass, trapdoors, etc.
Thank you for taking the time to create, and submit your map, I hope to see more from you in the future.
Luci