Broadway: Conceived and directed two Tony Award winning musicals: AIN'T MISBEHAVIN' (1978: Tony, N.Y. Drama Critics, Outer Critics, Drama Desk Awards - also Tony Award for Best Director) ; FOSSE (1999: Tony, Outer Critics, Drama Desk Awards); as well as RING OF FIRE, (2006). 

With composer David Shire: director/lyricist: BABY (1983, seven Tony nominations); lyricist: BIG (1996, Tony nomination: Best Score; also Dominium Theatre London 2019 ). 

With Alain Boublil and Claude-Michel Schonberg, co-lyricist: MISS SAIGON (Evening Standard Award, London 1990; Tony nomination: Best Score, 1991); co-lyricist: THE PIRATE QUEEN (2007). 

Director: THE STORY OF MY LIFE (2009). Director/co - lyricist: Andrew Lloyd Webber’s SONG & DANCE (1986 Tony Award for star, Bernadette Peters.) 

Off-Broadway: with David Shire: director/lyricist STARTING HERE, STARTING NOW (1977, Grammy nomination) and CLOSER THAN EVER, (1989, two Outer Critics Circle Awards: Best Musical, Best Score; also Off - Broadwa y Alliance Award, Best Musical Revival 2013; and London Jermyn Street Theatre 2014, ). 

Director: JUST JIM DALE, (Roundabout Theatre 2014, Vaudeville Theatre, London 2015). 

Regional: Lyricist/conceiver, TAKE FLIGHT (Menier Chocolate Factory, London 2010; McCarter Theatre 2012) ; book and lyrics, WATERFALL (2015, Pasadena Playhouse and Seattle’s Fifth Avenue Theatre); Lyricist, new musical SOUSATZKA (2017, Toronto). 

Film: Screenplay, MISS POTTER, (2007: Christopher Award, best screenplay.). Contributes cryptic crossword puzzles to Harpers Magazine . 

Son of well - known orchestra leader; Five children: Nicholas, David, Jordan, Emily and Charlotte.