Thanks for all your help, everyone. ALison, I'd love to have a gif as a reality check on the computer-translated midi and ABC files. You can send it to Susan.Stedman@noaa.gov.

As I've been learning the song I've been challenged by the range one needs to sing it - I'm an alto so I drop it down a couple of keys but even then I'm straining on "By day and night". The author must have been quite a tenor.