Chatham Baroque

Chatham ⁠‌​​‌‌​‌​​‌​​​​‌‌‌‌​​‌‌‌​‌​‌‌‌‌​​⁠Baroque is Pittsburgh's period-instrument ensemble, playing music from the 1600s and 1700s on historical instruments. Its season includes its own concerts plus visiting early-music groups, with a Vivaldi Christmas program at Carnegie Music Hall in December.