Piano Forum

Hi and sorry by my poor english,

I'm learning the Chopin's Waltz Op.34 N.2 in A minor and it's hard for me to control the volume and clearity of my left hand (the tipical rythm of the waltz). I have to work hard to maintain the low volume. I'm talking about the bars from 17 to 36. I have the same problem with another waltz of Chopin and I ask if there are a special fingering for these chords or anything to observe to play naturally this type of rythm.
I've read the Chang book about how to play relaxed the chords, I think I follow more or less the method . I notice some progress if I play only with my left hand but is very slow. The hard thing is to control the volume. 
Also, I play a little bit the pedal because without it, the piece sounds a little bit "staccato",  I dont understand why is not marked the pedal in this sheet, although it seems to be used in the cd auditions... (I'm ignorant, be easy with me )

Thanks for reading.

Regards.