Singing in the car- especially on a sunny afternoon, when I can open the windows, crank the music, and cruise the highway!
Music pieces from specific productions in which my daughter danced. There are certain pieces that transport me to a specific time/place, with specific people. Definitely music can take me to a moment/memory in time.
I have a very, very old recording (think early 1950s, on vinyl) of my father and my aunt singing for a church production. Some of the music is hymns, some are more classical pieces. Unfortunately we no longer have anything on which to play records, but I remember hearing this recording from my childhood.