Boston Symphony Orchestra's 2026 Tanglewood season, June 21 – September 2 in Lenox. Opening night with Yacht Rock Review PRIMETIME (Jun 21). Classical season runs July 10 – August 23 in the Koussevitzky Music Shed, opening with Nelsons leading an all-Tchaikovsky program. Season features a Yo-Yo Ma weeklong residency, Joe Hisaishi's conducting debut, and the "E Pluribus Unum: From Many One" theme celebrating America's 250th anniversary.