A CELTIC song was played by Lewis Capaldi's pianist at the singer's gig in Glasgow last night. 

Lewis had finished performing Bruises at a piano when he revealed to the audience that he wasn't actually playing the instrument.

He said: "By the way, I'm not even f****g playing the piano. Aiden, play something. Give them something nice, look, watch this."

READ MORE: Review: Lewis Capaldi at Glasgow's OVO Hydro

Warning: Strong language contained in videos

The pianist then played "It's a Grand Old Team to Play For," before Lewis shouts "no, noooooo, no. Aiden, I did not approve of that song." 

A loud cheer can be heard from the crowd before Lewis adds: "Right. Relax here, everybody. Aiden's getting the f*****g sack tomorrow, nearly started a riot there. I told you, two cities, do not mention it in Glasgow.

"That's thrown a spanner in the works." 

READ MORE: Several Celtic stars spotted enjoying night out at Lewis Capaldi gig

We previously reported that six Celtic players were in the audience last night. 

James Forrest, Joe Hart, Scott Bain, Greg Taylor, David Turnbull and James McCarthy were seated together as they watched the singer's show at the OVO Hydro.