I agree with Isa; but I also got trapped a few times so I had to restart; also there were some really annoying bits. When you went near the whomps stuck on the ground it made a grating sound; also sometimes the mushrooms got trapped so I had to restart. Plus there were some bits that I didn't know what to do. Apart from all the annoying bits it was brilliant level.
you can still get the mushrooms when they are in the terrain if you go on top of the block it's in. And you don't need to go close enough to thwomps so that they make that sound, except for one part. Not only that but if music supposedly should not bring down points that shouldn't either. And if you get stuck at certain parts, you can use the reset door so that you don't need to repeat the whole level. And if you are having too much difficulty with the falling platforms here's a tip, jump when it's more lower so you almost always land on it. This is for more advanced players, so if you can't play this atleast somewhat easily then I suggest you go and practice on the main levels. There are hidden blocks in this level, but it's ok, where there are hidden blocks there is a reset door.