Hi Dave,
Bravo!!! Both performances are marvelous! Absolutely spendid! The "Allegro con espressione" is a lush, unabashed romantic piece (not all that common for Medtner). And "La Campanella" is an extraordinary bravura piece with many demanding intricacies. I believe that your performance of both are excellent and you communicate them very well to the listener which is what is most important in any performance. Once in awhile I believe there could have been a bit more clarity in the layering of the music along with a more precise pedaling. However, having played Medtner's very thick textures myself, I know how very difficult that can be to achieve, especially in the heat of the battle! So my hat is off to you! I hadn't seen you much at Piano Street lately, so now I know why--you've been busy practicing!
Regarding the C7, overall I liked its sound. These pianos with their 7'6" length are meant to be placed mostly in smaller auditoriums and recital rooms. In the past I've tried some of their smaller models like the C5 but didn't much care for them. The bass seemed woody, the tenor was plain vanilla, and the treble was bright bordering on shrieking. I thought I was playing three different pianos with one keyboard! One thing I really like about Yamaha though is the evenness of the touch throughout the entire scale. Given that the C7 is at the top of the C line, Yamaha probably uses a superior scale design and likely prepares the C7s more thoroughly than the lower number models prior to delivery. The only criticism I would make about the piano is that the upper registers are so bright that they often overshadow the bass which should normally be more powerful at loud dynamics. Sometimes the bass can't hold its own here despite your efforts to bring it out.
Thanks for sharing these recordings! They were very exciting, and I'll be listening to them several times, I'm sure.
David