Dave Shapiro, a groundbreaking music executive in the heavy metal and hard rock scene, has died in a San Diego plane crash. He was 42.

Dave Shapiro, Sound Talent Group's co-founder and a heavy rock music agent, died in a San Diego plane crash on Thursday morning at age 42.

Tributes were pouring in across social media Thursday for music agent Dave Shapiro and drummer Daniel Williams, who were both believed to be involved in the deadly plane crash in a Murphy Canyon neighborhood.