If such a thing as being in love with a piece of music is possible, then I am deeply in love with the second movement of Brahms' Ein Deutsches Requiem, by my "favorite band", J.E. Gardiner and Orchestre Révolutionnaire et Romantique.
I can't say how many times I've listened to that album in the last week, much less how many times I've played that second movement on its own...