"I'm going back to the U.K., before Company actually, to do a production of Amadeus where the whole cast will also play the Mozart," Doyle revealed to Playbill.com. "Which is lovely and really nice to do [the theatrical technique he employed with the aforementioned musicals] with a play, to explore this with a play as opposed to, `Oh God!, another musical to do.'"

Shaffer penned the look into the life and emotional downfall of the composer Wolfgang Amadeus Mozart. The play, set in 1823's Vienna (and 1781-1791 in flashback), is told mainly through the eyes of his fellow (and at times rival) composer Antonio Salieri.

The work originally played on Broadway in 1980 with Ian McKellen as Salieri and Tim Curry as Mozart in the Peter Hall-staged production. Both actors were nominated for Tony Awards, McKellen took home the honor along with director Hall and the drama itself earned the Best Play Tony.

Shaffer adapted his play for the 1984 film version which starred F.Murray Abraham as Salieri and Thomas Hulce as Mozart. The movie garnered eight Academy Awards, including Best Picture.

In his stagings of Stephen Sondheim's Sweeney Todd (starring fellow Tony nominees Michael Cerveris, Patti LuPone and Manoel Felciano) and Company (with Raul Esparza and Barbara Walsh), Doyle had his actors portray the characters as well as provide their own orchestral accompaniment.

His next project will be directing a production ("where they will not be carrying their instruments") of Bertolt Brecht and Kurt Weill's opera The Rise and Fall of the City of Mahagonny for the Los Angeles Opera in 2007. Patti LuPone and Audra McDonald are lined up to star.