PORTLAND, Maine (NEWS CENTER)-- From people who simply loved his music, to fellow artists who made music with him, they are all expressing their grief over the death of rocker Tom Petty.

He died last night nearly 24-hours after being found unconscious and not breathing at his home in California. The cause was a Cardiac arrest.

News center photojournalist Derek Thayer went to "Bull moose music" in Portland's Old Port and spoke with some fans.