Hockets and trills are so much easier after a glass of beer. Does this mean that I am not relaxing my singing aparatus enough without the alcohol?

Is that a bit like the way people think they drive better after a few pints?!

Yes, perhaps. My usual repertoire doesn't include hockets either. They are certainly easier after beer.

If the question in serious: Might be, although it shouldn't encourage you to drink before singing Rossini, but rather having a look at your technique again

A trill in singing is merely a laryngeal shake, so if you have the tendency to keep your larynx locked in a certain position (mostly low if you are singing classical), it might feel difficult to sing trills and ornaments in general.

'scuse my ignorance, but what is a hocket?

It's a bit like organised hiccoughing.

Thats a hoquet.

A hocket is when a single line is shared between to vocalists, or other instrumentalists, and one sings/plays the other rests, and vice versa. Its common in handbell music too I believe.

Maybe the OP is singing with someone they fancy, therefore are finding it easier, when err. drunk?

Very good. I do actually know the difference between a medical condition and a musical device, thanks!

Are you sure, Tiddles?

Yes, Squirt.

In fact the word 'hocket' actually derives from 'hocquet' (meaning hiccough)...

Sincere apologies, Tiddles.

I thought hockets after beer were a normal occurrence?

Sounds too much like Rickets to me!

The unauthorised use of the monicker 'Tiddles' renders the already dubious use of the adjective 'Sincere' somewhat unconvincing.