The Cleveland Orchestra Youth Orchestra features some of the region's best young musicians. Tonight, you can hear them show off their skills as they perform at Severance Hall at 8. Led by conductor Brett Mitchell, the group will play selections by John Adams, Roy Harris and Tchaikovsky. If you arrive an hour early, you can see some of the Youth Orchestra members playing chamber music as part of a prelude concert. Tickets start at $15. (Niesel)