Dah, daah... diddle ah, da, da, dah, dah daaaah, duddle, dit, dit daah, dah, dah, dye dye...diddle aye-dye, diddly aye, diddly-aye day, diddly, diddly-aye...., diddly, iddly, iddly-aye-ay...!

They don't write 'em like that any more.  (Not even Paul MacCartney!)