I do not enjoy a whole lot of classical music for listening, but some I do enjoy is "The Four Seasons" suite by Antonio Vivaldi. The lively classical music will brighten any day, and makes lovely background music for any tea party.
Part of the reason for posting this is because I found today is the birthday of this composer. His music has a lightness which is refreshing after the heavier Baroque composers.
I also just plain enjoy hearing the violin, it is one of my favorite instrument, after the piano and flute.