18a. The path to follow, as pictured with rainbows, to wonderful Australia in short (6,5,4)?e?l?? ?r?c? r?a?
27d. ... on the framework you work on(4)??t?
15a. "What's it all about Alfie?" Hamlet contracted with a couplet!(2,2)
Many thanks
Sorry, I should have given letter pattern for 15a. It is(2,2) ?? b?
Wondering is it 'to be'
18a. I have a few more letters. ?e?l?w ?r?c? R?a?. Does Yellow Brick Road make sense?
^I assumed that it was just that the song associated with the film Alfie pondered on the same existential questions as Hamlet's soliloquy and that the clue was in the delightfully quirky style that the rte often adopts.