Katy Perry teased the opening bars of her brand new song 'Chained to the Rhythm' on social media the other day, and everyone agreed that it has a distinctly reggae vibe.

That was probably down to the fact that it features Bob Marley's 20-year-old grandson, Skip, who was recently signed to Island Records - the label that his grandfather had such huge success on.

Perry's latest track - which she made available for fans to listen to in various cities around the world the other day, by placing a mirrorball with a headphone jack at well-known locations - was also co-written by Sia.

The track has a vaguely political edge, with lines like "So comfortable, we're living in a bubble / So comfortable, we cannot see the trouble / So put your rose-coloured glasses on, and party on".

Watch the lyric video below: