 He often partners with the music and lyrics team of Chad Beguelin and Matthew Sklar, sometimes co-writing the book with Beguelin.Each of Martin's three musicals that have premiered on Broadway have included Beth Leavel in the cast.He has collaborated with Don McKellar, Mark McKinney, and Susan Coyne on "Slings & Arrows" and "", and with McKellar on "The Drowsy Chaperone".