DJ Earworm , known as Jordan Roseman to his mum, is a San Francisco based DJ who has risen to fame on the back of his incredible mixes of pop music. We, along with millions of you, saw his work on Youtube and thought here’s someone who loves pop music as much as us, let’s get him to do a mash-up for the Summertime Ball… and here it is… check out many clips he’s dropped in to his incredible re-invention of Justin Bieber’s ‘Baby’…