Шесть фортепианных пьес для левой руки, Op.31

I've never paid enough attention to my left hand performance abilities and it's a shame I must admit. The set really is helpful for setting the right technique and it's a great exercise for the brain too - as a right-handed person I found it quite complicated to completely shift the focus at the very beginning. I would say that Hollaender's pieces are meant for advanced players only, as an upper-intermediate I had to fight with the first two a bit. Anyway, thanks for the nice collection, it's a very useful work for all pianists, one way or another.