This was a new publication to me, even though it dates from 2014. I really appreciated the variation in styles that it contains, it seems to cover just about everything. The etudes are generally a page or two in length and cover a good range of two and a half octaves from low B up to f#''. They are all written completely in treble clef, and with the key signatures containing flats somewhat favoured throughout. The indicated tempos certainly add to the level of difficulty, I think a few of them are a little questionable.