|Completed the game 100% today. The music coins/time attack quest was kinda hard, but enjoyable in small doses.. mostly played it while watching shows. It basically involves redoing every part of every level, recollecting all 4 keys and finding all 8 music coins in one go. but some of the coins were stupidly hidden, I had to check a guide for the odd 8th music coin every now and then...|
The reward for super-clearing every stage... you unlock the 4th course of the golf minigame. I tried all of the golf courses, and now the game is 100% done.