Nice guide, but you made a mistake in level 1. In your video, where you are showing the location of the bread "Among the reeds", that's where the bread "Before the drop" is.
For Level 3 there is actually a REALLY EASY way to get "Taking in the Music", the one you said is the 'hardest in the entire game'. After getting the first one, "Lighting up the Dance Floor" you can simply roll off the light structure onto the bread below. You smash your bowl, but can then roll right on over to the mop bucket. Also, these videos were super helpful for finding all the bread so thank you so much for making them!
At the end of level 1 I managed to jump out of the water fall and bounce off the shore line and bypassed the end goal. That river goes way farther than you'd think xD
It is pretty difficult. Just line up the side of the bucket with the bar. Try a different side of the bucket if one doesnt work. You can inflate to try and boost yourself up, or try to be as far down as possible on the side of the bucket opposite the counter. Then swim up fast to jump out. In general jumping out of the bucket is pretty difficult. Just takes a lot of attempts and you'll get it.
I got the game just because of my name. I've been hopping on the bar for over an hour now to get the last pufferfish bread. I think I have over 60 resets in 1 run now.