Internet mashup guru Mark Vidler scores with this mix, which speeds up the instrumental track from John Lennon's "Imagine" and lays it over a slightly slowed down acapella version of Paul McCartney's "Band On The Run".  

They say the working relationship between Lennon and McCartney was other worldly, but this may prove it.   Take a listen as the two classic hits sync up almost perfectly (with a little help from Mark).