I enjoy Bill's music greatly. I heard him twice (at least) at the Princeton Folk Club, which uses a reasonably sized common room for its concerts. I've heard house concerts before, and it surely IS a delightfully different experience.
Bill's songs have made their way around a bit. Before I knew who he was I heard an autoharp player sing "A Place in the Choir" at a birthday party; I wouldn't let the guy out of my sight until he'd taught me the song. As it turned out, his melody was somewhat varied from Bill's. The first time I saw Bill in concert, he started into 'Choir', and I thought...Wait! That's not how it goes! So goes the folk process. Happily, though, if you sing Bill's original melody and the one I first learned together, they make a pretty decent harmony.
Our songs, if they're lucky, develop a life of their own apart from us...kinda like kids.
And so it goes...
Lynn