sentences:  He has also written, arranged and produced over 50 hit albums, and co-written songs with legendary and contemporary artists including Quincy Jones, Christina Aguilera, Phil Collins, Was (Not Was), John Legend, Dione Warwick, Ray Charles, Natalie Cole, Aretha Franklin, Tina Turner, and Seal.Zigman was born in San Diego, California.His mother, a pianist and harpist, was his first music teacher, and he developed an early interest in jazz and concert music, studying with Rocky Slight, Gene Hartwell (a San Diego jazz player), and Florence Stephenson.