Here are the possible solutions for group parodied by weird al in phony calls clue
Answer
Clue
Relevancy
tlc
Clue
Group parodied by Weird Al in "Phony Calls"
coolio
Clue
Rapper parodied by Weird Al Yankovic in "Amish Paradise"
devo
Clue
Band parodied by Weird Al Yankovic's "Dare to Be Stupid"
Definition
(short for) devolution, as in devo max, an arrangement in which a central government transfers the maximum amount of authority to a regional government while still retaining sovereignty over it