This work is wrongly labelled Op. 11, when (according to the scores) they are Op. 17. I tried to change this - corrected it in the two places I could see - but it doesn't seem to reflect in the title, nor in the listing in the composer page. (I don't know how to do this, or even if I can.) M.J.E. 13:51, 1 July 2010 (UTC)