Jethro Tull’s Original Bassist Glenn Cornick Is Dead At 67Jethro Tull’s Original Bassist Glenn Cornick Is Dead At 67The original bassist for Jethro Tull, died Thursday at his home in Hilo, Hawaii. Glenn Cornick was 67. His family told The New York Times the cause of death was congestive heart failure.Jon MichaelsJon Michaels