Duncan Sheik is once again working with Steven Sater, with whom he created the Tony-winning 2006 sensation Spring Awakening, this time on an adaptation of Hans Christian Andersen's The Nightingale as well as Lewis Carroll's Alice In Wonderland. Sheik is also working independently on a musical adaptation of Bret Easton Ellis's American Psycho. All three shows should see full productions in the next year or two. In the meantime, the indie-rock singer-songwriter has released a new studio set, Covers 80s, featuring acoustic reinterpretations of '80s synth-pop hits by Depeche Mode, New Order and The Cure. He'll play selections from the album when he stops by Alexandria's Birchmere tomorrow. He'll also perform from his own hit repertoire (1997's "Barely Breathing," and 2003's "On A High" and "Half-Life"). And he'll throw in a few musical theater numbers as well. Saturday, June 11, at 7:30 p.m. The Birchmere, 3701 Mount Vernon Ave., Alexandria. Tickets are $29.50. Call 703-549-7500 or visit birchmere.com.