Tom Petty wrote most of the Heartbreakers' songs, but guitarist Mike Campbell's role in the band over the years should not be overlooked. Where, for example, would the song "Breakdown" be without that ...

When Campbell gave it, he gave it good. In one early session for the group’s debut single, “Breakdown,” the guitarist devised what became the song’s signature hook. But as Petty told us, the lick — a ...