Radio Recorders, Inc. was an American recording studio located in Los Angeles, California. During the 1940s and 1950s, Radio Recorders was one of the largest independent recording studios in the world. Notable musicians who recorded at Radio Recorders include Billie Holiday, Charlie Parker, Sam Cooke, Jimmie Rodgers, Louis Armstrong, Mario Lanza, Patti Page, Elvis Presley, Jimi Hendrix, Frankie Yankovic, Frank Zappa, Paul Frees and the Carpenters among others. In its prime, the studio was considered the best recording facility in Los Angeles, with two large studios and some smaller ones, as well as disc mastering facilities.