John Hartman, the Doobie Brothers' hit-making 1970s drummer, has passed away. He was 72.

The Doobie Brothers were founded in 1967 in San Jose, California, after Hartman and singer-songwriter-guitarist Tom Johnston met up.

Soon joined by bassist Dave Shogren and singer-songwriter-guitarist Patrick Simmons.

the Doobies continue to perform live today, most notably in 1975 with singer-keyboardist Michael McDonald.

Only with addition of Michael Hossack as a second drummer in 1971, the band's distinctive double-drum sound was born.

From 1970 until 1979, Hartman played with the group, and from 1987 to 1992, he made another appearance.

Doobies had a streak of songs, such as "China Grove," that would later become classic rock standards.

There are many others, such as "Listen To The Music," "Jesus Is Just Alright," "Black Water," and "Takin' It To The Streets."

Hartman was inducted into the Rock & Roll Hall of Fame in 2020, along with Johnston, Simmons, and McDonald.