Frank Zappa wrote Doo Wop songs in the 50s and had minor success in the early 60s with the band, Soul Giant. But when he formed the Mothers of Invention in 1966, his fame became legendary. His 1973 album “Over-Nite Sensation” on Discreet records is now worth up to $200.00 in 2-channel stereo and up to $400.00 in 4-channel quadrophonic. Find the value for every record by Frank Zappa and the Mothers of Invention and those by over 65,000 other recording artists in the Mighty John Record Appraisal Guide on CD in Microsoft Word. It’s available in the left hand column.