I'm only being partially facetious to say that the greatest themes in music are Beethoven's Ode to Joy, the theme from Bach's chaconne for solo violin, and the

I'm only being partially facetious to say that the greatest themes in music are Beethoven's Ode to Joy, the theme from Bach's chaconne for solo violin, and the piccolo trumpet part from Penny Lane. (which was itself inspired by Bach's Brandenburg concerto #2)