Jun Senoue on Team Sonic Racing Original Soundtrack:

Boo’s House

This circuit, which takes place in the ancient ruins of a pyramid haunted by the ghostly Boos and King Boom Boo from Sonic Adventure 2, uses the music of Sandopolis from Sonic & Knuckles. When I heard that this area was also called Sandopolis, I felt like arranging this song was a necessity.