Premise: Robert Nesta Marley , OM ( 6 February 1945 -- 11 May 1981 ) was a Jamaican singer-songwriter , musician and guitarist who achieved international fame and acclaim , blending mostly reggae , ska and rocksteady in his compositions . Starting out in 1963 with the group the Wailers , he forged a distinctive songwriting and vocal style that would later resonate with audiences worldwide . It included four UK hit singles : `` Exodus '' , `` Waiting in Vain '' , `` Jamming '' , and `` One Love '' .
Hypothesis: Bob Marley was not a vocalist.
Label: CONTRADICTION