I really liked this. I can see where it gets a bit pitchy as it progresses. Having played the cello, tuning must be a nightmare. I'd love to hear the c sharp minor prelude and fugue from the WTC book 1 on this thing, but having played it on organ and on synth strings you have to slow it down just a tad vs piano and harpsichord (and fortepiano)
Another poster commented that perhaps it needs to be composed specifically "for". With the exception of the universally apropos Bach, this is perhaps true.