Tanglewood begins its classical programming July 3 with James Levine conducting Tchaikovsky's Symphony No. 6, with guest artist Yefim Bronfman in Piano Concerto No. 1, also by Tchaikovsky. Emanuel Ax is featured on Beethoven's Piano Concerto No. 4 with Herbert Blomstedt conducting on July 10... MATTHEW CAVANAUGH, ASSOCIATED PRESS