YouTube stars Cassetteboy have been making mash ups since before mash ups were even a thing. Their hits Cassetteboy vs The Bloody Apprentice and Cameron's Conference Rap have been viewed over 6 million times each and their YouTube channel has over 37 million views in total.

Their work has appeared on Harry Hill's TV Burp, Rude Tube and Have I Got News For You. They have completed high profile commissions for The Guardian and Amnesty International, and they perform 'live' at the Glastonbury Festival every year.