All I know is that I heard rock 'n' roll music in the background whenever I go to one of her lectures.
8 seconds sound clip from Batman (1966) - Hot Off the Griddle (S2E3) TV Series.
You can hear this line at 00:17:02 in the Blu-ray version of the movie.
Quote context
[...]
- Thank you, Chief O'Hara. You might as well spill it.
- You can kick me, hit me and stomp me, but I'll never talk... All right, I'll talk!
- They pick me up at my swank one room apartment, blindfold me, then take me to her place.
- Any clues as to where it is?
- Lessons in larceny. How despicable.
- And I used to hear a lot of people marching on the floor above my head.
- With a bunch of cats meowing whenever the music stopped. Heh-heh.
- Whatever her caper is, she plans it for tonight.
[...]