...In April, Billy Corgan announced that Smashing Pumpkins will reunite and begin recording a new album... Rihanna released her sophomore disc, Unfaithful, featuring the single S.O.S., which includes a sample of Soft Cell's Tainted Love... and Cee-Lo and DangerMouse's collaboration, Gnarls Barkley took the U.S. by storm, as their hit single Crazy stormed the charts and took off as one of 2006's most popular tunes.