The bassist from the 1960s band Cream, Jack Bruce has died aged 71.
Cream, which included Eric Clapton and Ginger Baker, is now considered one of the most important bands in rock history.
They sold 35 million albums in just over two years and were given the first ever platinum disc for Wheels of Fire.
Jack Bruce wrote and sang most of the songs, including "I Feel Free" and "Sunshine Of Your Love".
The BBC reports the group split in 1968 at the height of their popularity.
Bruce never had the same commercial success again, but continued to be regarded as one of the best bass guitarists in the business.
In May 2005, he reunited with his former Cream bandmates for a series of concerts at London's Royal Albert Hall.
Bruce's death was announced on his official website, and confirmed by his publicist Claire Singers.
She said: "He died today at his home in Suffolk surrounded by his family."
A statement from his family said: "It is with great sadness that we, Jack's family, announce the passing of our beloved Jack: husband, father and granddad and all-round legend.
"The world of music will be a poorer place without him, but he lives on in his music and forever in our hearts."