A keyboardist for the southern rock bank Lynyrd Skynyrd has died at his northeast Florida home.Orange Park Police Lt. Mark Cornett says 56-year-old keyboard player Billy Powell called 911 about 12:55 a.m. Wednesday saying he was having trouble breathing. Rescue crews performed CPR, but he was pronounced dead at 1:52 a.m. Cornett says no foul play is suspected and an autopsy will not be performed. He says Powell missed a Tuesday appointment with his doctor for a cardiac evaluation. A heart attack is suspected. Powell was one of two surviving band members who were with the group before a 1977 plane crash that killed three of its members.