He's taking lessons.
4 seconds sound clip from the Champagne for Caesar movie soundboard.
You can hear this line at 00:31:56 in the DVD version of the movie.
Quote context
[...]
- Maybe I can get some inside information for you Burnbridge.
- Care to treat me to a few piano lessons?
- I love this boy, I discovered him. He's one of the greatest men in radio.
- I feel two eyes boring holes in the back of my skull. Hi.
- Mr. Hogan, you are most unwelcome here.
- My dear Happy Hogan, at the last count, there were 10482 piano teachers in Greater Los Angeles.
- Your appearance here suggests an ulterior design.
- Gwen, my dear, you are unwise in the ways of the world.
- This insidious instigator of infamy stands poised at my vitals with a knife of treachery.
[...]