Harry Connick Jr. will premiere a composition for the 100th anniversary of his mother’s birth for Carnegie Hall’s 2025-26 season.

The Boston Symphony Orchestra is sounding a somber note with a new season that will give musical expression to the horrors of war.

Carnegie Hall will resume performances in October following a 1 1/2-year closure caused by the coronavirus pandemic but with a limited schedule of recitals and small ensembles until large orchestras return in January.