Complex sentence: When Holiday's producers at Columbia found the subject matter too sensitive, Milt Gabler agreed to record it for his Commodore Records label on April 20,1939, and "Strange Fruit" remained in her repertoire for twenty years.
Split into simpler sentences: When Holiday's producers at Columbia found the subject matter too sensitive, Milt Gabler agreed to record it for his Commodore Records. That was done on April 20,1939, and "Strange Fruit" remained in her repertoire for twenty years.