Thanks, Alex! Now I got to read the article. Very informative and interesting to a musically-inclined techno-nut (and Lego fan) like me. I guess Lego bricks can impart enough integrity to the frame to maintain tension after all...

The link doesn't connect to anything regarding the harpsichord; you might wish to check on that. Looks cool, though! My Mom's a piano teacher and the mother of five, so she should get a kick out of this. I notice that the builder added two extra legs to support the middle, which, due to the nature of Lego, would otherwise sag under its own weight. I'm rather surprised that a Lego frame was sufficient to maintain string tension, though. Even a standard hardwood frame usually isn't enough to keep a harpsichord in tune longer than a few days at a time.