'Alex' joined rapper Dave on stage for his song 'Thiago Silva'

Yesterday proved to be a big day at what was a pretty big year for Glastonbury.

After Stormzy killed it on Friday night with that gobsmacking headline set, Sir David Attenborough charmed the crowd at the Pyramid Stage yesterday afternoon before Kylie wowed everyone in the 'legends' slot.

One of the highlights for many, however, was moments like the one below.

When London rapper Dave went to perform his song 'Thiago Silva', he asked the audience for a little help.

Spotting a young lad called Alex in a Paris St. Germain football jersey (the team Silva plays for), he checked that he knew the lyrics before inviting him up on stage to perform it.

Dave himself is pretty stunned by what he witnesses, and it's safe to say that the crowd was loving it, too.

Watch it below: