Haydn, Mozart, Beethoven -- this is how we remember the iconic Viennese classics. And truly, this is the band of composers that even classical music laymen know well. Still it’s rare to dedicate a concert exclusively to them. The evening program’s atmosphere, radiating of strength and optimism, is meant for a real Spring night. This is especially true of the introductory Haydn piece, one of the composer’s first symphonies conceived in Hungary, the third part to his “Morning” and “Noon” titled symphonies. The piece paints a truly lovely G major evening, closing interestingly enough with a “Storm” movement -- the kind of vehement Spring shower that its writer watched behind the closed windows of the opulent Eszterházy castle. Mozart’s Oboe Concerto puts the oboe in a more pastoral, playful light rather than voicing it as a sad, complaining instrument. Beethoven’s 4th is the other half of the heroic “Eroica,” but is heard significantly less than the 3rd symphony.