Steve Albini, an audio engineer who influenced the sound of legendary indie and alternative rock musicians like Nirvana and Pixies, died Tuesday night in Chicago of a heart attack at age 61, according to his recording studio,

Steve Albini, a producer for Nirvana, the Pixies, PJ Harvey, and other prominent musicians of the era, has died of a heart attack. He was 61.

Steve Albini, an icon of the underground rock scene and frontman of bands like Shellac and Big Black, died of a heart attack on May 7. He was 61 years old.