Hm. Don't know that, but older liner notes sometimes call "Rosin the Bow"," Rosen[or Roger] the Beau";I always assumed it was just mishearing on the note-writer's part. Webster's says no, though: Bow is just something bent, as in, "...and arrow", but beau is from F. belle, from L. bellus, "pretty", as in the male, "dandy". This just thought of, though: is the title "His Last Bow", a tale of that old fiddler Sherlock Holmes, a pun on this"?