The Shakespeare Theater of New Jersey presents the regional theater premiere of “Illyria,” a new musical adapted from Shakespeare’s “Twelfth Night” by Peter Mills and Cara Reichel, with book, music and lyrics by Peter Mills. Performances run Nov. 30-Dec. 26. Paul Mullins directs.The title is drawn from the name of the mythical kingdom in “Twelfth Night” takes place: “a land of fools, where clarity’s a rarity and madness rules.” Cast includes Ames Adamson (Malvolio), Joel Blum (Feste), Maria Couch (Olivia), Elena Shaddow (Viola), Steve Wilson (Orsino), Benjamin Eakeley (Sir Andrew Aguecheek), T. Doyle Leverett (Sir Toby Belch) and Kristie Dale Sanders (Maria). Mills and Reichel debuted “Illyria” in 2002 at Off Broadway’s Hudson Guild Theater. It was a production of Prospect Theater Company, of which they are founding members. They have been developing the “contemporary operetta” since. Mills will participate in a post-play discussion with cast and artistic staff after the Dec. 7 evening and Dec. 11 matinee perfs. And on Dec. 9, associate artistic director Joe Discher offers a pre-performance talk as part of a new program called “Know the Show.” For information, call 973-408-5600 or visit www.ShakespeareNJ.org.