Some pretty well made tracks with a creative take on the theme, I like it! I especially like your use of motifs which really help to make the songs feel more connected and part of the same game. I like your implementation of live playing such as your trumpet and your friend's clarinet, I think it adds a somewhat human vibe to the tracks and it's a well appreciated addition! I also appreciate you adding your thought process when creating the songs in the description, it's pretty interesting to see someone else's thought process when creating tracks.
Overall some very nice and well made tracks! As I've said I enjoyed your use of motifs and creativity when creating the OST (especially the last song, I like your use of a somewhat uncommon time signature!). You did a great job making these tracks feel part of the same game and I applaud you for that!
If you have some time I'd also appreciate if you could check out my submission as well (only if you want to, tho!).
That's all I have to say really, have a splendid day!