Trey Parker's South Park Co-Creator
This page is the CodyCross answer for the clue below from World of Sounds, Group 1346, Puzzle 5 (Sound Baths).
Question is: Trey Parker's South Park Co-Creator
and the answer is: MATTSTONE
Word Meaning:
MATT — (chiefly British spelling) Alternative spelling of matte.
Definitions from Wiktionary.