Jefferson Jericho Blues Tom Petty and the Heartbreakers Jefferson Jericho Blues Tom Petty and The Heartbreakers Questions/ Corrections: drop me a line! Off their new album MOJO Key of A (use major pentatonic for improv.) MUSIC FYI: Mike Campbell, at the suggestion of Tom, used only a 1959 Gibson Les Paul on MOJO, as opposed to his collection of Rickenbakers and hollowbodies, to mix up the sound of the record. I saw the Heartbreakers live with CSN in 2010 and all of the MOJO tracks, along with (azchords.com)