Cellist Alisa Weilerstein performs with the Cleveland Orchestra tonight at 7:30 at Severance Hall, as the orchestra takes on Dvorák's Eighth Symphony, perhaps better known as his "New World" Symphony. The cellist and the orchestra will also team up for Barber's Cello Concerto. Additional performances are set for tomorrow at 11 a.m., Saturday at 8 p.m. and Sunday at 3 p.m. Consult the website for ticket prices. (Niesel)