I do like books, plays, movies with bittersweet themes: The plays of Eugene O'Neil and Tennessee Williams, many of which I've seen on Broadway, F. Scott Fitzgerald's and John Steinbeck's books - to name a few that have left lasting impressions. And the three books I discovered on your group; At Swim, Two Boys; Dream Boy; and A Map of the Harbor Islands - all bittersweet stories that deeply affected me, with characters I think I will never forget.
When I'm sad or melancholy I turn to music for solace - some Bach, or Mozart, etc. My spouse reacts just the opposite - music intensifies her sadness.