On Sunday, August 31, at 4:00 p.m., the Ardente Duo (violinist Darel Stark and pianist Sachi P. Hirakouji) fill the Atherton Performing Arts Studio with arguably one of the finest works for violin and piano ever written, César Franck’s soaring Sonata for Violin and Piano in A Major. The program also includes works by Beethoven, Edward Elgar, and Eugène Ysaÿe. The concert gives audiences a rare opportunity to enjoy the Atherton’s magnificent Bösendorfer grand piano. Reservations may be made online at www.hprtickets.org or by calling the station (955-8821) during regular business hours. Tickets for the Ardente Duo’s afternoon of chamber music are $30 general, $25 for HPR members, and $15 for students with ID. The Atherton Studio is located at Hawai‘i Public Radio Plaza, 738 Kaheka Street.