Greetings
There was a piano scene in one of the episodes of "Taxi". It was one of the most hilarious scenes in the series.

The scene went something like this...
Elaine Nardo had a "by invitation only" to a high brow soiree of the local music elite. 8)Her date who had planned to bring her had to cancel at the last moment,

but insisted that she go anyway and use the invitation to go with someone else.

Well, no one in the garage would be caught dead at such a party.

Jim Ignatowsky (the drug addled burn out from the 60's) however, volunteered to be Elaine's escort.

Horrified at first,

Elaine vehemently refused Jim's offer, but reluctantly acquiesced when Jim assured her that he was used to dealing with the upper crust.
Elaine begged Jim to be on his best behavior and not get involved in any meaningful converstions of note with the other guests. Jim agreed and off they went, she in a ball gown and Jim in tails.
The scene was funny enough watching Elaine squirm everytime someone came to talk to Jim.
When the concert pianist who was supposed to entertain the guests cancelled because of illness, the host appeared to be in a terrible quandry as to what to do.
That is, until Jim piped up and stated he would be glad to step in and take over. Elaine was mortified.
Jim sat down at the piano, looking up and down the keys with a puzzled look wondering where to start.
She sank lower and lower in her seat as Jim cracked his knuckles and started to play "London Bridge" at a Grade 1 level rather badly and out of rhythm to boot.
When he got to the end of the verse and went to hit the note on the word "fair" (as in my fair lady), he overshot the note by a minor 3rd and mayby an +4th on the next try.
By now, even the guests are fidgeting and the hostess has a ghastly look on her face.
After several more attempts, Jim finally gives up trying to hit the correct note and says something to the effect like "Oh the hell with it!" and starts in playing Fantasie Impromptu at breakneck speed perfectly.
As he is playing, and with a shocked look on his face

, he says to his audience, "I must have had lessons!"

The next scene he has become the hit of the party as everyone is standing around the piano as he plays one sing-along after another.

Cheers

Well it was funny to me!