One of the most significant arrangers in jazz history, Gil Evans' three album-length collaborations with Miles Davis (Miles Ahead, Porgy and Bess and Sketches of Spain) are all considered classics. Evans had a lengthy and wide-ranging career that sometimes ran parallel to the trumpeter. Like Davis, Gil became involved in utilizing electronics in the 1970s and preferred not to look back and recreate the past. He led his own band in California (1933-38) which eventually became the backup group for Skinnay Ennis; Evans stayed on for a time as arranger.