I was looking for a Scottish Gaelic lullaby and came across this:
https://archive.org/details/raretunes-dena-graham-cha-chaidil
No music, just a clear voice. Exactly what I was looking for. Sgoinneil!
Except that the title of the song is the opposite of a lullaby: "Cha Chaidil, Cha Chaidil" = 'No Sleep, No Sleep".
https://www.bbc.co.uk/alba/oran/orain/cha_chaidil_cha_chaidil/
Oidhche mhath leibh!🌙