 From 1954 to his death, he was professor of cello at the University of Southern California.He was also one of the cellists in the Paganini Quartet and the Hungarian Quartet, and was a founding member of the Alma Trio, a piano trio, and remained with that ensemble from 1942 until it disbanded in 1976; in the early 1980s, the trio reformed, with Rejto again as the cellist.Rejto taught for a number of years at the Music Academy of the West summer program for gifted students, where his master classes were extremely popular, not just with cellists.