Five years ago Sufjan Stevens' “Illinois” established the Detroit-born multi-instrumentalist as one of our most creative songwriters. Rich in lyrical narrative, complex classical orchestration (oboes, flutes, strings, trumpets) and choir-accompanied harmonies, the resulting opus is still regarded as one of the best albums of the past decade. Staying in the public eye — releasing a collection of B-sides and alternate takes, a box set of holiday music, and producing a multimedia performance about New York City's Brooklyn-Queens Expressway — the prolific artist finally gave patient fans something proper to listen to with his sixth full-length, “The Age of Adz” (pronounced “odds”). An aural cacophony of chamber-pop beauty and schizophrenic electronics, Stevens successfully demolishes the stylistic expectations drawn from his past, all the while never losing his quiet sense of grandeur. Stevens is scheduled to headline the National on Tuesday, Nov. 9, at 7 p.m. $35. 612-1900.