Adorned with a Robert Crumb cover, Big Brother and The Holding Company’s 1968 album Cheap Thrills marked the end of an era for the band.  It was Big Brother’s second and final album with lead singer Janis Joplin, whose incendiary talents were simply too big for any one band.  Cheap Thrills, produced by John Simon, remains a touchstone for pulse-pounding blues-rock.  Lead guitarist Sam Andrew, guitarist James Gurley, bassist Peter Albin, and drummer David Getz unleashed one of the most distinctive vocalists of all time on such tracks as the powerful “Piece…