Thanks, rr. Specifically, I was told that Ray was singing about heroin with this song, but when I saw he didn't write it I wondered if that was what the songwriters intended or what Ray read into it (or neither). And to clarify, I was only thinking of Ruby standing for H in this song, not in general usage.I also optimistically thought it might not be too rough to work up some chords for this one, but it's not coming easily. Can anyone help on that?