Olivia Vote was just about to launch into Donna Elvira’s big aria when the power went out at the Wolf Trap Barns. "Don Giovanni" is scheduled to be performed on Tuesday. (Photo by Carol Pratt) (Courtesy of Wolf Trap.) (Carol Pratt/Wolf Trap)

But a number of performances did go on as scheduled. The Washington Early Music Festival came to an end on Saturday with a delightful performance from Hesperus, accompanying a screening of the 1923 film ”The Hunchback of Notre Dame,” which I reviewed.

Robert Battey was thrilled by the final concert of the National Orchestral Institute under Asher Fisch — the Mahler Third. Leading up to this last week, I attended the “New Lights” concert, an annual experiment conducted by NOI students. And Charles T. Downey heard Fisch and the mezzo Stefanie Iranyi in a lecture-concert devoted to Mahler’s songs.

Joan Reinthaler attended a performance of the new international choral festival, Serenade, which continues through today.

And one Wolf Trap Opera Company performance did go on in the last few days; Stephen Brookes reviewed a recital four Wolf Trap artists gave on Thursday at the Phillips Collection.