Pianist Martin Perry joins the PSO to perform Barber’s Piano Concerto tonight.

Tuesday, April 9

Portland has historically been home to many Armenian immigrants, so it’s apropos that the Portland Symphony Orchestra performs the most famous work of Armenian-American composer Alan Hovhaness, the mighty “Mysterious Mountain,” as part of a program, titled “Enigma Variations,” that also includes Samuel Barber’s Piano Concerto and Edward Elgar’s eponymous work. It starts at 7:30 p.m. at Merrill Auditorium (20 Myrtle St., Portland), preceded by a concert conversation in the rehearsal hall at 6:15 p.m. Tix: $26-$64. 842-0800. portlandsymphony.org.