High school of cello playing

Pablo Casals championed David Popper's music. My recent post about Popper attracted a lot of readers. Naxos has just released this double CD of the forty Études that make up Popper's Hohe Schule des Violoncello-Spiels (High School of Cello Playing).
High school cello -> old school cello -> new school cello.
I have not bought, received or heard a copy of the David Popper CD. I saw it on display in the priceless Prelude Records, Norwich, but the Overgrown Path CD buying budget for January is overspent. Any copyrighted material on these pages is included as "fair use", for the purpose of study, review or critical analysis only, and will be removed at the request of copyright owner(s). Report broken links, missing images and errors to - overgrownpath at hotmail dot co dot uk
Comments
http://imslp.org/index.php?title=Category:Popper,_David
http://www.cello.org/Newsletter/Articles/poppercl.htm
Early Minimalism?