Original sentence: He recorded with most of the top musicians working in the Los Angeles area including the Beach Boys, Everly Brothers, The Association, Barbra Streisand, Elvis Presley, Ella Fitzgerald, Frank Zappa, Sam Cooke, Cher, and Nancy and Frank Sinatra
Edited sentence: He recorded with most of the top musicians working in the Los Angeles area including the Beach Boys, The Mamas & The Papas, the Everly Brothers, The Association, Barbra Streisand, Elvis Presley, Ella Fitzgerald, Frank Zappa, Sam Cooke, Cher, and Nancy and Frank Sinatra