THE LINK: I just came across this book online: "Kvæðaskapur: Icelandic
Epic Song", by Hreinn Steingrímsson. It looks interesting although
there's a lot that's too technical for me to understand. It discusses
the possibility that the traditional Icelandic singing/chanting style
might go back to very early times, and that Old English poetry could
have been performed in a similar way. Unfortunately some of the
special Icelandic characters don't show up, so watch out for missing
'ð', etc.
http://music.calarts.edu/KVAEDASKAPUR/
THE CORRECTION: For some reason I absentmindedly added 'ik' in that
first line of the would-be Gothic verse in my reply to Konrad, which
should have read: 'Brikan skal airis, broþar,' (an attempted
translation of ON 'bresta mun fyrr, bróðir').