Please refer to 'on first looking into chapman's homer', 'to autumn', 'ode to a nightingale', 'ode on a grecian urn to sleep', 'ode on melancholy', and 'la belle dame sans merci', when explaining Keat's sensuousness in his poetry.

Thanks

p.s. why is 'Ode to Autumn' the maturest expression of keats' sensuous art?