Chopin Impromptu in Ab major

[amee]

I'm currently learning the Impromptu in A flat major, op 29.  I am having some difficulty with the trills at the start of each measure - should I place them before the beat or after?  

Thanks.

[ned]

before the beat. accent on the beat. it's easier and sounds much better.
Ned

[tosca1]

It is not a trill on the E flat but a mordent with the notes E flat, F, E flat.  Chopin was most precise in his realisation of ornamentation according to Carl Mikuli and it should be played on the beat.
Thank you,
Robert.

[amee]

Thanks guys.

I tried listening to recordings of this piece by Ashkenazy and Kempff and I think they play it before the beat.  Not sure though.  I could barely hear the left hand in Kempff's playing!