Barry Allen Singing "Summer Nights" Plus Drunk Caitlin Snow (The Flash) 

"You know I'm not much of a singer.." LMAO SHUT UP SEBASTIAN

"You're fast AND you can sing?" I love Caitlin

When Barry started singing Caitlin looked so confused.

Caitlyn: 'HE'S SOO FAAST! shhhhhhh' Oh my god 😂😂

Drunk Caitlin is life

I HAVE WAITED THE ENTIRE SEASON FOR THIS AND THEY DIDN'T EVEN SING THE WHOLE SONG

My name is Barry "not much of a singer" Allen and I'm the fastest man alive 😂 Not much of singer my ass, I've seen you on Glee, boy 😂😂

0:50 basically everyone's reaction if they didn't watch season 3 of glee 😂😂

"what can't you do?"-C "apparently stop you from drinking"- Barry 😂

One of my favorite scenes this season. Especially a hung over Dr. Snow. Quote from episode. Caitlin: "I don't remember much from last night." Barry: "Summer lovin-" Caitlin: "God that I do remember."

'Im not much of a singer' -Barry Was on Broadway, Glee and went to Uni for performing arts

Look at him go he's so fast! Oh *SSSSSSSHHHHHHHHHHH* Love this bit

In arrow he says he's not much of a dancer, *tap dances for years and was in many musicals*

i'm guessing that this was what Barry learned from being a Warbler😏

" Oh look at him he's so fast ... ssssshhhhhh" "We are gnna bring this place DOWWN" .. "okay just... good girl" lmao I DIED

*watching scene for the first time* wtf he can sing?! *face of realization when I remember he was on Glee* ohhhhhhhhh

Who knew Caitlin was such a great singer!

Barry to drunk Caitlin: "You're not much of a drinker." *3 years later* Drunk Barry: "I AM THE FLAAAAAASH!!!!" 😂😂😂😂😂

"ohhh look it him he is so fast"

I need another excuse for Grant to sing on the show ASAP.

Once in Glee, always in Glee

Get out of Barry's head, Sebastian!!! 😂😂😂

Caitlin's reaction when she found out that Barry can sing is hilarious! XD

"You're fast *and* you can sing?! What can't you do?!" Change the past, I'm pretty sure he now regrets doing all that shit back in his Dalton days

Finally Grant sings on the flash. Bet you now 50+ flash fans are watching his other videos right now knowing he can sing. I was waiting for them to do a party/singing scene for a while.

lol Caitlin/Danielle Panabaker is so cute with that little "UH!" at the endXD

His face and tone when the bartender ignored him had me crying even before Caitlyn started being all cute and hilarious

i can watch this over and over and over again and still laugh at it..." Your fast and you abd sing? What can't you do??"

Guess Glee really paid off lol :D

I love how she looks after he sings those first few lines. Also when they got home and she accuses him of sneaking a peek, which let's be honest he probably did a little, It was so sweet.

Caitlin: You're fast AND you can sing? What else can you do? Me: He's also an awesome dancer, especially with tap dancing.

Sebastian Smythe captured my heart way before Barry Allen did, so his amazing singing wasn't news to me aha

"I'm not much of a singer" my ass

this is what happens when the cast of The Flash figures out what Barry did during high school lol

This is my favorite episode because of Caitlin 😂😂

'Not much of a singer' my ass!!!! They should not have made Grant say that line. He's always been an amazing artist and dancer

OMG! SEBASTIAN SMYTHE IS IN BARRY'S BODY. ALL THAT IS MISSING THE AWESOME SASSYNESS AND THE CONSTANT FLIRTING!

That was not Barry that Sebastian :D

Every Gleek watching this: "hihihi"

*Imagines a wild and jealous Kurt Hummel running in with an axe screaming "YOU TRIED TO STEAL MY BOYFRIEND YOU ASS. NOW I STEAL YOUR LIFE."* ....Holy what the hell did I just type

SEBASTIAN HAS RETURNED!!!!!!!!!!!!!!!!!!!!!!! LOL

waiting for Flash/Supergirl duet

When this kid used to dance and sing on Glee with Supergirl

Once a Warbler, always a Warbler. I Love Sebastian

I guess being Captain of the Warblers helped

Sing Barry Sing!

Caitlyn's voice when she heard his voice. "I met a boy." Sounded like she was going through puberty xD

"I'm not much of a singer!" DO YOU WANT ME TO SHOW CAITLIN MY GLEE BOX SETS

“We are gonna bring this place down” “Okay just...good girl” lol I died

Barry: starts singing Caitlin: surprised pikauchu face

Sebastian? wrong show dude.

0:54 I love his voice when he sings "Summer days driftin' away"

0:55 - 057 I can see the Sebastian on Barry's face. I see the small bit of smug popping through on his adorable face.

The whole time watching this scene I was thinking "Hey Barry, your Sebastian's showing xD"

Caitlin is soo cute in this aww they are soo cute 😂😂😂

glee was another time line he created when he went back to the fast. he was known as Sebastian Smythe.😀

sebastian all over again this time more adorbs

I found Grant Gustin through Glee so, I knew he could sing 💓

Jesus Christ- when he sang that first line, oh gawd it was beautiful 😻

MMIISSTER Sebastian Smythe!

Sabastian why are you on the flash?!?

it’s unhealthy how many times i’ve watched this. i can mouth every word

"Look at him go!!! He's so fast..." Lolz XD

He said good girl aww I love snowbarry

He can't stop fucking up the timeline

Grant plays this scene so well, he’s in the worst possible mood and turns this into one of the most memorable scenes in the show

Sebastian Smythe moment

Barry's reaction when Caitlin started singing was hilarious! lol

still my favorite scene of season 1

i'm astonished by how cute this scene is every time i watch it

HIS VOICE IS HEAVEN!! BITCH I LIVE!!!!!

"I'm not much off a singer" haha Barry…oh wait I mean Sebastian

This episode brings my Snowbarry feels all over. When they're on stage together it just..clicks

"Im not much of a singer"

This is really good acting on the part of Danielle Panabaker - capturing that perfect moment where she's really drunk, but you see the cogs turning in her brain after realising Barry is a really good singer. The small inflection in her voice and the body language

My favorite episode of season one

Grant Gustin can sing and dance and he's adorable little puppy

I live for this show and Grant 😍😍

A pleasant surprise when watching this show for the first time. Barry's hotness factor just rose exponentially.

I wish they showed them singing more!

Barry your Sebastion is showing #Gleek

I just love how they always almost spill is identity when they're drunk, Caitlin thought she blew it just by saying "ooh he's so fast" lol. I just love the way he says "ok, just good girl" did anyone else think they were gonna get together after this episode, their chemistry was everything. and well he did FLASH her, when she asked ;)

I laughed hard when he said: I'm not much of a singer.

I love hearing him sing. I wish it could have been longer.

HAHAHA THE LOOK SHE GAVE HIM WHEN HE STARTED SINGING WAS LIKE "I TRUSTED YOU"

OMG the voice of Grant is beautiful

This confirms the fanfictions that basically say that Barry’s time as a warbler and as Sebastian are apart of the Flash franchise in my mind!

Her face in disbelief is great. xD

First time I saw this episode I COMPLETELY forgot he was on glee and was like "oh this is gonna be so awkward..."

love when grant says 'good girl' to daniella

"Come on down. or up?" This gives me life

I already knew Grant could sing from his Glee days and I love Caitlin she cracks me up in this scene. she is actually a good singer in rl

Caitlin's drunk voice is so cute lol

Did you sneak a peek? At my goods?

0:47 umm let me just scream for a moment

His face is so cute when Caitlin starts to sing😂

Glee flashbacks....

where is my inhaler coz that shit is breathtaking !!! GRANT GUSTIN i love you!!!

I remember when I first saw this episode and my jaw dropped when Barry started singing

you fast and you can sing 😂😂😂😂 yee baby is this BARRY ALLEN