Sly and the Family Stone

He'd been battling COPD and other underlying health issues for some time.

They were a defining presence at Woodstock and made one of the '70s' greatest albums. Then their leader bottomed out.

Here's where the bestselling artists were in their lives when they rode the top of the charts and what they are doing today.

A look at the greatest biopics, documentaries and concert films since the genre's birth.

If any single album summed up the mood of 1971 in 45 minutes, it was this one.