The tune proved harder to transcribe than I'd thought - it is all on four notes, but it's got a 3-quaver anacrusis, which threw me. (OK, I didn't know what an anacrusis was this time last year.)

Here it is, anyway. Share and enjoy.

X: 1
T: (This is) the Ballad of Sir Patrick Spens
S: Phil Edwards
M: 4/4
L: 1/8
Q: 1/8=200
K: G
zG/2G/2Bc|d3 z2ddB| G4 z3B|cBcBc3B|G4zG/2G/2Bc|
d3 z2d/2d/2d B| G4 z3B|cBcBc3B|G4z3B|
cBc c/2c/2 cc/2B/2G2| cBc B/2B/2 c/2c/2d d2|
cBcBc/2c/2BcB|d4-d4|dd/2d/2 d/2d/2B/2B/2 cBGB/2B/2
cBcB cB c/2c/2 B|G4-G4|z4||