Amy Winehouse unexpectedly joined Professor Green live on stage last night - and even Prof Green himself seemed surprised by Wino's appearance.
MTV went down to the I Need You Tonight hit maker's gig at Proud Galleries in Camden to mark the venues second birthday where the East London MC was joined by a very special guest.
As Prof powered through his set, the Back To Black singer appeared out of nowhere to sing Lily Allen's part on the rapper's new single, Just Be Good To Green.
The crowd went mad as Winehouse jumped out of the audience to sing just two lines with the Before I Die rapper before disappearing again.
One audience member told us: "She came on unexpectedly and the crowd went wild."
They added: "She looked unsteady on her feet and appeared to be nervous."
It is unknown whether the duet was planned, but the Professor himself seemed happy with their brief collaboration later tweeting: "Just tore Camden a new one! Amy Winehouse jumped on stage and sung just be good to green!!"
Winehouse partied at the event in Camden with Jarvis Cocker, Mumford & Sons and X Factor finalist Olly Murs - who Professor Green later contacted on Twitter suggesting they should record together.
The MC, real name Stephen Manderson tweeted: "@ollyofficial good to see you last night bro! Wicked vibes! We should get in the studio someday!"
By Joanne Dorken