Ludvig Schytte (1848-1909) was a Danish composer, pianist and teacher. His works aren’t widely performed today but his shorter educational works are still popular with students.
It is my belief that this book should be considered mandatory for any student wishing to develop an expressive “classical” touch at the instrument. There is just so much variety of sound, expressive possibilities and technical challenges in these pieces. Do yourself a favour and try them out!
Online resources: You can view all the Supersonics Plus resources available for this book here
(turn your phone sideways to view the samples)