When you're performing on stage it can be easy to get swept up in the moment - and for many of the performers at Radio 1's Big Weekend, this definitely happened!
James Arthur
Lana Del Rey
Haim
...and Haim's fans!
Lorde
Kasabian
Galantis
Zara Larsson
Imagine Dragons
Galantis
Emeli Sandé
...and Radio 1's own Danny Howard!
