Some years ago my local library had a book which was called, from memory, "Victorian Parlour (or Parlor) Songs" or perhaps "Songs from a Victorian Parlour", something like that. Alas, it is no longer held - must have been culled quite a while ago. It featured piano arrangements, and many songs were for multiple voice arrangements. Many of the songs were tearjerkers, and there were several by Henry Clay Work.

Also don't forget that later in the century, Gilbert and Sullivan songs were very popular.

Cheers
JennieG