What is a synonym for "soiree"?

Common synonyms include: affair, assemblee, assembly, assignation, at home, ball.

Soiree

noun

noun ·2 syllables ·Uncommon ·Advanced level

Noun

1
A formal evening party.
"An invite to a party / Or watching The Price Is Right / Opting for a soiree / For the first time in a year"
2
a party of people assembled in the evening (usually at a private house) wordnet

"The pianist she'd hired knew enough pieces to play all throughout the soiree."

Borrowed from French soirée (“evening activity”).