By Joe JACKSON A guitar expert and two journalists have launched a global hunt for a missing bass guitar owned by Paul McCartney, bidding to solve what they brand “the greatest mystery in rock and roll”. The trio of lifelong Beatles fans are searching for McCartney’s original Höfner bass — last seen in London in 1969 — in order to reunite the instrument with the former Fab Four frontman. McCartney played the instrument throughout the […]