In the August issue of Q, we counted down the finest collaborations of all time, the perfect unions of two - often unlikely - voices. Now it is over to you to choose which of our top 20 is the best.
Walk This Way - Aerosmith & Run DMC - The spark for numerous rock-rap crossovers. A reworking of a decade-old Aerosmith hit which proved to be the catalyst for the tight-trousered rockers' rebirth
