Serenata Concertante op. 105, because I often play it right at the start of Spring. After the harsh winter we suffered this past year, I'm more than eager to welcome Spring with open arms and listened to Diabelli this afternoon on the way home from work.
Another composition that evokes the return of Spring for me is The Garden of Adonis, Suite for Flute and Harp by Alan Hovhaness (1911 - 2000). Like the piece by Diabelli, this one is made up of multiple movements. There are seven movements, in fact, but each is quite short and the entire piece is only 16 minutes long.
Hovhaness was an American composer, and the only music I have of his is the pictured album featuring Yolanda Kondonassis on harp. The album contains several pieces, which are all wonderful. However, The Garden of Adonis is especially ear-catching with its mystical melodies and muted beauty.