The Green Room hosts Open Mic night every Sunday and anyone can take to the stage to show off their talent but something unusual happened last weekend.

On the 30th of July, something unexpected happened with around 40 musicians turned up with their instruments. The orchestra from Amsterdam turned up to show off their talent including tracks from Harry Potter.

Ewan Petrie a sound engineer from Perth, captured the moment on camera. Watch the video embeds below.

More nights like this, please?