When the Moon Is in the Serpent's House

For those JunkThieves who don't have time to head down to the Alemany flea market or other venues of vintage vinyl or other junk, I strongly recommend visiting Frank's Vinyl Museum. Besides such gems as Ethel's disco album, a couple of Mrs. Miller's hits and others, there is this newer entry. The Nashville Country Singers apparently managed to afford a little sound equipment but not the lyric sheets, so they sort of improvised the words on Aquarius to come up with the "moon in the serpent's house" which may actually be an improvement and makes more sense. Where was that seventh house anyways?