A Perfect Circle

How the Stars Aligned for A Perfect Circle and Their New ...A Perfect Circle is an American alternative rock supergroup formed in 1999 by guitarist Billy Howerdel and Tool vocalist Maynard James Keenan. Known for a melodic yet atmospheric sound, they achieved early success with hits like "Judith" and "Weak and Powerless," releasing four studio albums: Mer de Noms, Thirteenth Step, eMOTIVe, and Eat the Elephant.