was directing an outreach performance in a Harlem street with the Jazzmobile program. All welcome. Foster called for a blues in B flat. An aspiring tenor player, with more enthusiasm than musicality, launched into a wild "energy" solo in no discernible key, let alone B flat, swamping everyone else onstage.
Foster stopped playing. "What are you doing?" he asked.
"Just playing what I feel."
"Well, feel something in B flat, motherfucker," said Foster.
At another jam session, sometime in the 1960s, another young saxophonist found himself onstage with Coleman Hawkins