This should be played slowly with feeling,not in waltz tempo.
Jocklet, this is a Waltz, a Welsh one and therefore would be played in Waltz tempo albeit slowly and with feeling. If not a Waltz then what is it?
It means "The Flowers of the Thorn" and its lovely.
Angels of the North
It’s not a waltz,it’s a slow air.Listen to Brian McNeill’s version on his album "Monksgate" You can play it as a waltz if you want to,it still sounds good.
Mae’n walts -
You can have your cake and eat it at whatever speed you like and in a dainty fashion or with melodromatic kick. We played this one for waltzing in Ceredigion (the centre-of -the-universe for some being Aberystwyth) and beyond, putting the latter swing on it. It is played by the Welsh Folk Dance crowd (Cymdeithas Ddawns Werin Cymru / The Welsh Folk Dance Society) in various states of waltzing it. It is also featured in their collection:
"Blodau’r Grug: 100 o Alawon Dawnsio Gwerin Poblogaidd Cymru / 100 Popular Welsh Folk Dance Tunes" - selected and arranged by Alex Hamilton, revised by Robin Huw Bowen
Yr Alawon / The Tunes:
4. Waltsiau / Waltzes ~ page 35:
Tôn / Alaw / Tune #75. Blodau’r Drain / The Flowers of the Thorn