Jamaican legend Bob Marley began recording in the mid-1960s when R&B-influenced vocal harmony was the order of the day in Jamaican pop. With the Wailers, he presaged every major development from rock steady to roots reggae. By combining the tension of political issues with the expansiveness of Rastafarian spirituality and some of the deepest grooves in reggae, he earned a worldwide audience. Though Marley died young, he remains an icon comparable to John Lennon, a musical and social visionary.