As your book notes, some of the songs in it were also on broadside ballads. I've made identifictions of a few otherrs and tentative identifications of yet others in the book with broadside entries in the Register of the Company of Stationers' and have pointed out other manuscripts that also have copies of some of the songs in the book. Just search for 'Percy' or 'loose' in the broadside ballad index on my website. www.erols.com/olsonw. The tunes for some of the songs are among the broadside ballad tunes on my website. C. M. Simpson didn't discover the original tune for "Last Christmas 'twas my chance", used for "Panders [or Gallants] come way" in the book, but it's on my website. I've only recently discovered the broadside ballad version of "When as I doe record", but I haven't yet acquired the tune for the song, which is in a manuscipt in the British Library with another copy of the song. "Panche" is a broadside reworking of G. Kyttes "The Unlucky Firmentie", c 1585. "Down lay the shepherd swain" is in Scarce Songs 1 on my website, but I can't remember which of 3 versions I gave there. The first song in the book is figuratively King James' lament for the death of Queen Anne, as a manuscript copy in the Bodleian Library shows.