The sophisticated harmonic patterns of The Four Seasons punctuated by the distinctive falsetto of Frankie Valli were at once classic and innovative, as were Crewe's use of a melancholy harmonica in ``Big Man in Town'' and the space-era organ of ``Save It For Me''. In addition to _his_ work with The Four Seasons, Crewe also oversaw recording sessions by such artists as Dee Dee Sharp, the Orlons, and Ben E. King. <sep>, Pronoun: his