This Peach's Castle demo has some really nice music...

[CM30]

http://www.youtube.com/watch?v=RlLOF-IjBpA

For a mere tech demo the music sounds almost Mario Galaxy like and really makes me wish they'd remade Super Mario 64 in a similar style. Really, it's kind of an odd mix between Galaxy's music and Paper Mario's music and actually sounds rather nice. Have a listen:

http://www.youtube.com/watch?v=QA3OH9ksL9w

http://www.youtube.com/watch?v=MzMcoOexrz8

I can't be the only one who wishes this was used along with the castle design for a hub for a proper Mario platformer, right?

 

[CM30]

Some more music:

http://www.youtube.com/watch?v=FHvOSycNO9M

http://www.youtube.com/watch?v=t_Tug9OyHoU

 

[Yoshi64Mario]

It looks absolutely massive, I'd certainly like jumping around with Mario inside that Castle. The music was OK, but I'm more impressed at the Castle itself. And good grief, it has a theatre? The textures on the Mario statue are also well-made.

 

[Fillfall]

The castle looks pretty much like an upgrade version of the SM64 one. I really hope to see something close to this to.

 

[Emoluvjd2]

The music doesn't really seem fitting for the places it was used for, but its not actually that bad.