I think #6 it's from the clock town in "The Legend of Zelda: Majora's Mask".
#6 Is the second day in the clock town, from The Legend of Zelda: Majora's Mask. Technically Firecat got this, but each day has a different song.
Technically, it's meant to be the intro/Day1 version, but otherwise both of you are correct, and Firecat's description is accurate according to Youtube. Sorry Blox!
(The difference is mostly in the pace of the tune, as it gets faster and faster each day. There is a video that compares all three, like so:
Day1,
Day2,
Day3. But I know, it's hard to compare when there is only one.)
#3 is Goomba Village from Paper Mario.
So very close!
...but not right.
With some technical difficulties out of the way, more videos are... on the way.