All concerts will take place in Slee Concert Hall on the North Campus. Tickets may be obtained through the UB Center for the Arts box office at 645-ARTS or through any Ticketmaster location, including Kaufmann's and Movies Plus. Call 852-5000 for Ticketmaster information.

Sunday, April 21, 5 p.m., Organ Recital Series, $8, $6, $5, $2; Concert IV, "20th Century Organ Music of America and France," David Craighead, organ.

Program: Symphony No. 6, Op. 59, Louis Vierne; Suite Bretonne, Marcel DuprÚ; What a Friend We Have in Jesus, from Three Gospel Preludes, William Bolcom; Sonata for Organ, Op. 86, Vincent Persichetti; Organbook III, William Albright; Hommage à Igor Stravinsky, Naji Hakim.

Friday, May 10, 8 p.m., Slee Visiting Artist Series, $10, $8, $5, $4; Pianist Jean-Yves Thibaudet. Thibaudet is, at the age of 33, a major presence on the international concert scene, and has long been acclaimed here and abroad for his extraordinary technical abilities and deeply musical sensibilities. He performs regularly with leading orchestras, conductors and chamber ensembles around the globe.

Program: Three Nocturnes, Three Etudes, Sonata No. 2 in B-flat minor, Op. 35, Frederic Chopin; Etude Symphoniques, Robert Schumann.