The Columbia as Moran's
Barry wakes up in a strange musical hall where Kara is singing a song onstage.
“Duet” Filming Locations
Barry and Kara are trapped in a musical by a new villain who is sapping their powers.
The Flash episode “Duet” was filmed in New Westminster & Vancouver in Canada.
401 West Georgia as Central City Bank
Wally, Cisco, and J'onn show up to stop the Music Meister from robbing a bank.
Homer Street (between Georgia & Dunsmuir) as Fourth & Aspen
Cisco uses a portal to bring J'onn ahead to ambush the Music Meister.
Front Street (between Fourth & Sixth) as Alley behind Moran's
The two families face off in the alley behind the theater and Barry and Kara get shot trying to intervene.