I'm always listening to music when I watch a movie a lot of times I listen to the music more sometimes than I do to the movie. Maybe thats also because I do music for film and video games and stuff.
my niece do that also when she wants to clean the house or wash the dishes. i also ask her why she is like that, she answered that she dont like to do the chores without music. and she can easily finish the chores with the help of music.