Cherry Red's Grapefruit imprint has invited listeners to join the Circus. The Italian band Circus 2000 is the subject of I Am the Witch: The Anthology, a 2-CD set containing both of the Jefferson Airplane-esque group's albums, originally released in 1970 and 1972, plus singles, alternate mixes, and tracks intended for a never-completed third LP. Circus 2000's charismatic lead singer, Silvana Aliotta, had successfully transitioned from a precocious teenage pop singer to a rock frontwoman as