AustrialianChamberOrchestraCreditJonFrank_thumbGoings on about Town…Music by two enfants terribles of the classical sphere—Prokofiev (orchestral arrangements of the “Visions Fugitives” for piano) and Jonny Greenwood—coexists on this program by the exciting orchestra from Down Under with bedrock repertory by Mozart (the Clarinet Concerto, with Sharon Kam) and Haydn (the buoyant Symphony No. 83, “The Hen”). (Zankel Hall. 212-247-7800. April 26 at 3.)