A selection from the BBC's music archives showcasing those hits that saw artists and acts joining forces to bring something new and unique to the UK charts. These are some of the biggest and best collaborations that remain classics to this day, featuring George Michael and Aretha Franklin, Eminem and Dido, Nelly and Kelly Rowland, Peter Gabriel and Kate Bush, Meat Loaf and Cher, Kenny Rogers and Dolly Parton, and Kylie Minogue and Jason Donovan