JEFFREY BROWN:

Just how this music was lost in the first place is something of a mystery. Coltrane was recording a lot at the time.

He and the band were back here the very next day to make an album with singer Johnny Hartman that would become a classic. They were also at the end of a two-week run at the famed Birdland club in Manhattan. The March 6 session, capturing some of that live feel in the studio, was recorded on both a master and reference tape, the latter for Coltrane to take home.

The master was lost. Coltrane's personal tape turned up years later with the family of his first wife, Naima. Ken Druker and others heard the music for the first time last December.

You had heard the recording outside the studio, and then you came here and listened to it? What happened?