DURING A DEFINITIVE rendition of “Exodus” which capped an hour-long show by the Wailers, Stevie Wonder joined Bob Marley on stage and moved 2,000 members of the Philadelphia-based Black Music Association to their feet in a visceral optimism so strong that for a palpable moment all the tensions and doubts provoked during last week’s conference seemed resolved. Music has been known to do that. Continue reading “The Black Music Association Movement of Jah People”