Five of our favourite guest appearances at Coachella

Coachella 2014 was awash with amazing artist cameos, speaking highly to the collaborative vibe at one of the biggest music festivals in the world. Some were expected, some weren't, but all added to a very memorable couple of weekends. Here are 5 of our favourite moments.

1. Beyoncé (joined Solange)

2. Jay-Z & Diddy (joined Nas)

3. Debbie Harry (joined Arcade Fire)

4. Mary J Blige (joined Disclosure)

5. Gwen Stefani (joined Pharrel)