Diane Wittry, ASO music director, conducts “Sublime Schubert” concert.

CONTRIBUTED PHOTOS BY MARCO CALDERON Allentown Symphony Orchestra's “Sublime Schubert” concert, premieres 7:30 p.m. May 29, and afterward is available on-demand. Centerpiece of the concert is Franz Schubert's “Symphony No. 5 in B-flat major, D. 485.” Tickets: www.millersymphonyhall.org; 610-432-6715