In 1954, Al Nevins left the band due to ill health, to be replaced on Three Suns recordings by George Barnes, Johnny Buck (aka Bucky Pizzarelli), and later by Joe Negri.
The publishing company entitled Aldon Music became hugely successful with Nevins' business acumen and experience as a producer and arranger, and Kirshner's keen ability for discovering talented songwriters and performers, as well as the industry contacts he doggedly pursued.
Aldon Music had under contract at various times several of the most important songwriters of the so-called "Brill Building" school, including Carole King, Gerry Goffin, Neil Sedaka, Howard Greenfield, Barry Mann, Cynthia Weil and Jack Keller.
As a producer-promoter, Kirshner was influential in starting off the career of singers and songwriters including Bobby Darin, Neil Diamond, and Carole King.
At the height of his success, Nevins suffered a heart attack and had relinquished his position by the early 1960s, but he continued to exert a powerful indirect influence at Aldon Music in his choice of arrangers, including the addition of Marty Gold and Sid Ramin.