I'll Be Mrs. (Buffy the Vampire Slayer, "Selfless")

Broadcast as part of episode 7x06, "Selfless", but presented as a flashback occurring narratively during the musical mayhem of episode 6x07, "Once More, With Feeling". It occurs the evening after Anya & Zander's song and dance number, and before they catch up with Giles the next day.

Before the song starts, some off-screen singing can be heard as Anya goes to close the balcony door, a duet complaining about mustard being served - this is likely producer David Fury reprising his character from "The Mustard", joined by Marti Noxon's character who has not yet received "The Parking Ticket".