Lyric Opera's free concert, which includes highlights from the upcoming season, is a great opportunity to hear some truly gorgeous music and some major singers. Tenor Vladimir Galouzine, who will star as Calaf in Puccini's Turandot and has gotten rave reviews for his performances in that role abroad, will sing the heart-stopping aria "Nessun Dorma." Another highlight is certain to be the appearance of mezzo-soprano Susan Graham, a Grammy winner and international star who has a stunning voice--never heavy or forced--and is a great actress too. She'll open the concert with an aria from Mozart's La Clemenza di Tito and later will sing an aria from Moises Simons's 1934 opera Toi C'est Moi. Among the other singers are Andrea Gruber and Lyric Center alums Erin Wall and Christian Van Horn; the numerous other solo arias and ensembles will come from, among other works, Mozart's Cosi Fan Tutte, Gounod's Romeo et Juliette, Puccini's Madama Butterfly, and Verdi's Otello. Richard Buckley will conduct. Sat 9/9, 7:30 PM, Pritzker Pavilion, Millennium Park, 100 N. Michigan, 312-827-5925. Free.