Paying close attention to the music I'm hearing.

Music Me earlier to a parent: "At the end of the concert tonight (Prom 43) there was an encore and the orchestra played Grieg's In the Hall of the Mountain King, which is the kind of thing which orchestras tend to know and the conductor left the stage in the middle to have a listen. How does it go? Erm. Duh-duh-de-duh-duh-de-duh-duh-de-duh-duh-de-duh-duh-de-duh-duh-de-duh-dub-duh. Oh no hold on -- that's the theme from Tetris."