The August 13 concert, which features violinist Gil Shaham, will now include Shostakovich's Symphony No. 10 instead of the composer's Symphony No. 7. Mozart's Violin Concerto No. 4 remains on the program.
The all-Mozart program on August 14 is unchanged. Flutist James Galway is the soloist.
Tanglewood also announced that bass Kristinn Sigmundsson has withdrawn from a July 16 concert performance of excerpts from Wagner operas. Stephen Milling and John Cheek will replace him.