It was!
Elaine had gone out with a saxophone player. She was all excited because he had this huge addition but he and Elaine had an all night sex session and, without going into too much detail, he was not able to play his instrument well....
Audition, not addition!!!
They were 'hot and heavy' and I'm sure Elaine played his instrument very well.
“he was not able to play his instrument well”
Really? You would think that would keep them from going all night... oh wait... you mean AFTER.