As guitarist and a key architect of the Eighties band’s iconic sound, Mike Campbell rode the highs and lows of band life alongside his inimitable, hot-tempered frontman. He speaks with Jim Farber about grieving,

In his new memoir, “Heartbreaker,” Mike Campbell recalls an afternoon in the early ’70s when Tom Petty — Campbell’s bandmate in a Gainesville, Fla., cover band called Mudcrutch — played one of his songs.

When Tom Petty passed away in 2017, he was on the road with his band The Heartbreakers. The legendary singer-songwriter died of an accidental overdose after using drugs to help ease the pain of a fractured hip.

Heartbreakers guitarist Mike Campbell insisted his "conscience is clear" over his bandleader Tom Petty's 2017 death from an accidental drug overdose. "I don't torture myself [over Petty's death]," Campbell,