Buffyreunion: Sarah Michelle Gellar's singing voice was almost dubbed in 'Once More With Feeling'

Nowadays it seems like everyone does a musical episode.

ButBuffy the Vampire Slayerwas one of the first series to attempt the genre flip.

Read on for what they told EW at the20th-anniversary reunion.

Then afterward everyone would eat and drink.

SARAH MICHELLE GELLAR:Im not a singer.

I never have been and I didnt have a lot of time with the material.

So my original intention was to have someone else do the singing.

What I didnt realize at the time is it would be such an emotional arc for the character.

I didnt realize that would be the episode where you found out where she was.

We didnt get the script until like two or three weeks before.

I really went back and forth to whether or not I was going to sing.

But it was exhausting.

For more revelations from the past four decades of entertainment, visitew.com/untoldstories.

JAMES MARSTERS:I remember, in general for different reasons.

I think the entire cast was a bit terrified.

I think one person, I forget who it was, actually asked to juggle chainsaws instead.

And we didnt realize how big of a genius Joss was.

And we stopped whining and we started working really hard.

And suddenly there were voice coaches and dance coaches showing up on set.

I think in the face of what we thought was certain doom, we decided to go out swinging.

People kept coming in for their vocals and going, Why are you here?

NICHOLAS BRENDON:The musical for me was kind of my ultimate because it was so different.

It didnt matter if I sucked because I wasnt hired to be a singer or dancer.