50 years after The Beatles split, experts hail their enduring legacy while fans remember how band conquered Scotland and then the world

© Express / Getty ImagesPaul, John, Ringo and George on bagpipes and 
marching drum on April 29, 1964 ahead of gigs that night at the ABC in Edinburgh
Paul, John, Ringo and George on bagpipes and marching drum on April 29, 1964 ahead of gigs that night at the ABC in Edinburgh