Watch: Florence Welch + Arcade Fire perform 'Dog Days Are Over' together live.

Florence Welch joined Arcade Fire on-stage during the final London date of their 'Everything Now' album tour, to perform the Florence + The Machine song 'Dog Days Are Over' together live, as well as perform 'Wake Up' with Boy George, and party backstage.

Watch some video footage from the show below...

When I was writing this song, I would go to Isa’s studio after art school, (cycling up Crystal Palace hill which takes some dedication) I had been listening to an album called ‘Funeral’
And I wanted to at least try and make something that could be in any way as beautiful...
— florence welch (@flo_tweet) April 14, 2018

...I don’t know if I succeeded, but to play it with them last night was a dream come true. @arcadefire changed the way I wanted to make music and I will be forever grateful to them x pic.twitter.com/byn1TgzJbP
— florence welch (@flo_tweet) April 14, 2018

Florence Welch joined Arcade Fire to perform ‘Dog Days Are Over’ in London tonight! pic.twitter.com/Qh8i7DLdFh
— Florence Updates (@FATMUpdates) April 13, 2018

@flo_tweet performing Dog Days Are Over with @arcadefire tonight! pic.twitter.com/iHFqOgUezi
— FATM Italian Army (@FATMItalianArmy) April 13, 2018

In case you’re having a bad day here is a video of Florence Welch smiling @arcadefire concert to make the world a better place to live pic.twitter.com/AJGsJ2oJW8
— FairyFlorence (@Flo1Fairy) April 13, 2018

Arcade Fire, Florence Welch, Preservation Hall Jazz Band, Boy George etc keeping it going back stage. pic.twitter.com/iBZggpWNN1
— Arcade Fire Tube (@ArcadeFireTube) April 13, 2018

Florence Welch alongside Boy George backstage at the Arcade Fire show tonight in London! pic.twitter.com/kn8mHD8MMO
— Florence Updates (@FATMUpdates) April 13, 2018