From notes to Alan Lomax's World Library Of Folk and Primitive Music, Vol. 3: Scotland:

                   Bressay Lullabye
Sung by Elizabet Barclay. Recorded by the BBC.

The Shetlands owe much of their folkways to the Norsemen for, until four centuries ago, these islands formed part of the kingdom of Norway. The "Bressay Lullabye," first printed in the early 1900's, is one of the best known and loved Shetland tunes.

Ba-loo, ba-lili, (3)
Ba-loo, oo-ba.
Den come the bonnie angels, (3)
Tae wir bairn noo,
Ba-loo,...etc.