(light piano music)
- Well you know what they say.
The show must go on!
- We're shooting the big musical crossover
with Supergirl and Flash.
- You're in a movie musical.
- We what now? - We what now?
- The Flash, Supergirl crossover musical extravaganza.
- Bravo!
Round of applause, standing O, that was so good!
- Well, it's a musical.
- Yeah, it's musical time.
- I am so excited
and ready to jump around,
and I'm trying to contain myself.
- The fans just asked for it.
- People have been wanting us to do a musical
ever since the casts were announced.
- There's so many huge stage talents
that are on these shows.
- I've done a lot of Broadway.
Victor, and John Barrowman, and Carlos
have all done Broadway,
and Melissa and Grant come from Glee.
- Most of us are all seasoned musical theater performers.
♫ I'm your super friend.
- My favorite sequence
that I'm the most excited for people to see
is the tap number that Grant and I got to do together.
♫ I'm your super friend
- Rachel Bloom, from Crazy Ex Girlfriend,
reached out to us, and said she'd love to
contribute a song for our musical,
so she wrote a song called Super Friend.
♫ I love you more than the lightning bolt
♫ I wear on my chest
- I'll be singing a song that originally
is from guys and dolls,
but we use it in this episode
to show our love for a young girl name Millie.
♫ Music I can wish you
♫ Merry music while you're young
We say musicals.
When you can't talk anymore,
you have to express yourself through song,
and it's a transition right into it,
and that's where you see the true soul of the character
and the songs their singing.
♫ Can't say how the days will unfold
- My friends from the University of Michigan
Benj Pasek and Justin Paul.
- Who did the music for Dear Heaven Hansen on Broadway
and La La Land.
- They wrote an original song for this episode--
- Called Running Home to You.
♫ All I wanna do
♫ Is come running home to you
♫ Come running home to you
- [Andrew] Blake Neely is our series composer,
and he has outdone himself with the arrangements
for these songs.
- We are at the Warner Brothers' Eastwood Scoring Stage,
which is actually my favorite stage
probably in the world.
The history here is unbelievable.
The original Flash series in the 90s
was scored on this stage,
so that's fun to be back here.
We will have a group of about 50 players today.
Big brass section, woodwinds with saxophones,
and of course, strings.
♫ You see, it's getting late
♫ Oh please, don't hesitate
♫ Put a little love in your heart
- We're shooting the big opening number today,
which is Put A Little Love in Your Heart.
- That is a big group number with John Barrowman
and Darren Criss, and Jeremy Jordan,
and Carlos.
- A huge, big dance number
with lots of dancers.
- It's a production.
♫ Put a little love in your heart
♫ Put a little love, put a little love
♫ Put a little love in your heart
- When they told us we were doing this musical,
I was like, really?
- I thought they were crazy.
I thought this is insane, there's no way,
there's no way we can pull this off.
- It's kind of fun in that way.
When you do theater,
sometimes you only get two weeks to put a show up,
so it kinda felt like that.
It sort of felt like this summer
saw a performance we were putting together.
- Gregg and Andrew always have big lofty ideas,
and the best thing about them
is they believe that they can pull them off,
and somehow they throw it at us,
and we figure out a way to make it work.
So, here we are doing a musical episode.
I didn't think it could be done,
but it's definitely being done.
♫ Come on and put a little love in your heart.