Barry's singing? Twin? What?

I need a drink

Felicity was searching the web for one Sebastian Smythe, who was due to visit Palmer Tech next week. When she first heard of his visit, she was obviously curious having never heard of the Smythe heir. Well, no she had heard of Samantha Smythe but she was one, a girl and two, thirteen so she could not be the person coming to meet her boss. She clicked on an article from last month titled 'Sebastian Smythe Officially Takes Over Mother's Fashion Company.'

Sebastian Symthe is known as a musical prodigy, and a rich playboy. He has always had a love for fashion and was even a model in France during his college years. He says he will continue his mother's legacy and his own passion in the acting business. We will have to wait and see how he will do this but it will be interesting to see his new ideas for Smythe Fashion.

The article continues for several pages.
Felicity searches YouTube for him to see if he really is a musical prodigy. The first video is Sebastian playing piano. There is no video attached but the song he played was beautiful. After the song ended, another video popped up, the Warblers singing 'Live While We're Young.' Who're the Warblers?

On Felicity's screen, a bunch of prep school boys in blue uniforms with red lining in a rectangular formation. They marched in time to the music, turn so their backs are to the audience, then the lead turns and oh my god, is that Barry!!

(Barry look a like):
Hey girl, I'm waitin' on ya, I'm waitin' on ya (wow he can sing!)Come on and let me sneak you out
And have a celebration, a celebration
The music up, the window's down
Yeah, we'll be doing what we do
Just pretending that we're cool (just pretending?)
And we know it too
Yeah, we'll keep doing what we do
Just pretending that we're cool
So tonight

(They did some fancy dance moves where some of the boys jumped over their friends.)

(Barry? with The Warblers):
Let's go crazy, crazy, crazy till we see the sun
I know we only met but let's pretend it's love

(The Warblers? started doing flips and tricks that Felicity isn't sure Oliver could do!)

And never, never, never stop for anyone
Tonight let's get some (Barry? is back in front of the group)
And live while we're young

(The Warblers):
Woahhh oh oh oh
Woahhhh oh oh oh

(Wow, they are so in-sync with each other!)

(The lead):
Wanna live while we're young

(The Warblers):
Woahhh oh oh oh

(Barry look a like):
Tonight let's get some

(They returned to a formation on the stairs)

And live while we're young
And girl, you and I,
We're 'bout to make some memories tonight

(Another boy comes from the fold to sing):
I wanna live while we're young
We wanna live while we're young

(Barry with The Warblers):
Let's go crazy, crazy, crazy till we see the sun
I know we only met but let's pretend it's love
And never, never, never stop for anyone
Tonight let's get some
And live while we're young
Crazy, crazy, crazy till we see the sun
I know we only met but let's pretend it's love

(They continue doing crazy dance moves as they start wrapping up the song)

And never, never, never stop for anyone
Tonight let's get some
And live while we're young
Wanna live, wanna live, wanna live
Come on, younnngg
Wanna live, wanna live, wanna live
While we're young
Wanna live, wanna live, wanna live
Tonight let's get some