Trouble playing Beethoven!?

Help please. I have trouble playing the trills on the top note on bar 30 (where you play 2 a's at once and trill the top one, i just cant do it no matter how hard i try!!!!) anyone got any hints, otherwise i cant go past the 30th bar...

PS also, does anyone know what grading Fantaisie Impromptu is for?

SORRY I FORGOT TO SAY MOONLIGHT SONATA MOVEMENT 3!!!! SO SORRY< BAR 30

In my Augener's edition it has two alternate ways of playing it - either holding the bottom A# whilst you play a triplet semiquaver/16th note then 4 demisemiquaver/32nd notes OR playing a quintuplet semiquaver/16th note - but only playing the A# in octaves on the first one. Therefore you are playing the octave, but only for a short time - you let the bottom A# go whilst you play the rest of it. As it's so fast and you'll be playing it with the pedal it may hardly be noticable. That's the one I'd go for - I think the first one would only be playable if you had very large hands. Also I wouldn't necessarily play the rest of the trill with 5 and 4 - I'd play the octave with 1 and 5 and then the rest with 4 and 3, as they're stronger fingers; though that's up to you.

Fantasie Impromptu is a pretty challenging piece, though I'd say this piece is probably more difficult if played up to speed. It really depends on your musical style and what you personally find easy. The difficult thing in the Fantasie is the 6 against 4 rhythm - it needs a lot of work to crack it.

Beethoven is one of the most prolific musicians of all time. You might want to be a bit more specific about what piece of music you are talking about.

Which instrument are you talking about ?....piano, guitar, violin ?