Scarlet Fever is an all-female backing band that toured with Cee Lo Green during 2010 and 2011. Originally formed for promotional tour events, the popularity of the "Fuck You" single and The Lady Killer album led to multiple television appearances reaching an audience of millions in Europe and North America. With Green, they performed full length concerts and as an opening act for other major performers.

A backup band or backing band is a musical ensemble that typically accompanies a single artist who is the featured performer. The situation may be a live performance or in a recording session, and the group may or may not have its own name, such as "The Heartbreakers", or "Bob Wills and his Texas Playboys" in the 1930s. Often, backup bands contain sidemen who are skilled but not known to the public; these musicians may be replaced or substituted at any time without noticeable impact on the performance.