(Sorry if this is a duplicate - I hit Submit and nothing happened.)

The Patrick Spens tune (which I've never heard Patrick Spens sung to) is the one Tony Capstick modified. MacColl sang it in 4:4 with one bar of 5:4; Capstick's version is in 7 with some bars of 6 and a couple of 4. It's very definite & regular - Capstick was a great man for timing - but you don't hear the complexity at all until you actually count it. My own version, fwiw, is in 5:4 throughout apart from two successive bars of 6 and 4. After Capstick's & June Tabor's versions, but more after his than hers.

Does anyone know who the guy who posts Capstick videos as "pinknblues" is, btw?