 He found Ladnier and recorded the Panassié Sessions with Sidney Bechet and Mezz Mezzrow.Ladnier and Bechet participated in the first "From Spirituals to Swing" concert arranged by John Hammond in December 1938.Ladnier's last studio recording was on February 1, 1939, in New York as a sideman with singer Rosetta Crawford accompanied by James P. Johnson's Hep Cats (Decca 7584).