Hilliard “Sweet Pea” Atkinson, who had a run of improbable hits in the 1980s with surrealist art-funk outfit Was (Not Was) before becoming an in-demand session singer, died of a heart attack May 5. He was 74 years old.

“He was one of the most underrated soul singers around. I never felt he quite got the recognition he was entitled to,” said Don Was, who started the group with partner David Was in 1979.

Celebrated rock 'n' roll photographer Robert Matheu died unexpectedly in Los Angeles on Sept. 21 at the age of 63.

Matheu was born on Detroit's northwest side in 1955, the youngest of four children. He began his photo career as a teenager during the high-energy Motor City scene of the late 1960s. His early photos of the Stooges and the MC5 showcased a raw talent that, once honed, would make him an in-demand shooter.

"His work reflects the essence of Detroit and mirrors the raw and gritty music that comes from our city," says mega-producer and fellow Detroiter Don Was. "He was never an airbrush kind of guy and he never needed darkroom hocus pocus to enable his photos to stand on their own. He had the eye and the mastery of his tools to quickly determine the nitty gritty of the situation and capture it squarely in his lens. That's why his archives contain so many iconic images."