Glenn Douglas Barnard Cornick was an English bass guitarist, best known as the original bassist for the British rock band Jethro Tull from 1967 to 1970. Rolling Stone has called his playing with Tull as "stout, nimble underpinning, the vital half of a blues-ribbed, jazz-fluent rhythm section".

What did Glenn Cornick die from?

Cornick was the band's original bassist, playing from its inception in 1967 until he left three years later. He had been suffering congestive heart failure and died at his home in Hilo, Hawaii, on Friday.

How did Jethro Tull die?

His family said the cause was congestive heart failure. The focal point of Jethro Tull, which was formed in late 1967 and remained active into this year, was always Ian Anderson, who in addition to being the lead singer and principal songwriter is a charismatic performer and one of the few rock musicians to play flute.