The music resumes on Wednesday, April 22, with the annual Jazz Prodigy concert at the Berkshire Athenaeum. Sponsored by the Friends of the Athenaeum, this year’s concert introduces 14-year-old drum phenom Xander Rosenblum, who will be playing with a local all-star group headed by pianist George Oldziey, and including Paul Ostermayer on saxophone and Adam Cote on bass.