Dh'eirich Mi Madainn Cheitein (Dh'éirich mi moch madainn Chéitein)    10I arose early on a May morning. is a waulking song, sung while "waulking" or "fulling" newly-woven tweed. It is in Scottish Gaelic.
You can find recordings on youtube, performed by
Kathleen Mac Innes https://www.youtube.com/watch?v=2_jVUs9bAGI

Ainsley Hamill & Alastair Paterson
https://www.youtube.com/watch?v=BJn8MewHwhk
Margaret Bennett and Martyn Bennett
https://www.youtube.com/watch?v=YFNfG42ExRM=YFNfG42ExRM

Dh'éirich mi moch madainn Chéitein

Fail ill é hill ù hill
ó Hiuraibh ó na hó ro éile
Fail ill é hill ù hill ó.

Dh'éirich mi moch madainn Chéitin,
Mas moch an diugh bu mhuich' an dé e.
'S binn a' chòisir rinn mi éisdeachd.
Smeòraichean air bhàrr nan geugan,
Uiseagan os cionn an t-sléibhe.   

'5 bòidhche fhiamh 's a' ghrian ag éirigh,
Madainn chiùin fo dhriùchd nan speuran,
Bric air linneachan a'leumraich.
Leanaidh slàinte agus éibhneas
Riù-san a bhios moch ag éirigh.

translation

I arose early on a May morning.   
If early today it was earlier yesterday.   
Sweet was the choir I listened to,
thrushes on the tops of the branches, larks above the moor.   Beautiful is the prospect, with the sun rising,
a calm morning under the dew of the heavens,
trout leaping in the pools.   
There will follow health and happiness
for those who rise early

and another version

Faill il o hill u ill o
Hiùraibh o 's na hòro èile
Faill il o hill u ill o

Chuala mise sgeul bha èibhinn
Gun robh gaisgich dheas air èirigh
A chur beatha 'n cainnt na Fèinne
Chaidh iad cruinn a ceann a chèile
Thuirt iad gu robh chànan feumail
Anns an sgoil cho math ri Beurla
Siud an duine a rinn feum dhuinn
Siud an duine a rinn feum dhuinn
Friseal Mac an Tòisich gleusta
Togaibh luinneag agus sèist dha
Àrdaichear e gus na speuran
Leis na Gàidheil 's gach àite 'n tèid e

Hiùraibh o 's na hòro èile
Faill il o hill u ill o

English Translation:

Hiùraibh o 's na hòro èile
Faill il o hill u ill o

I arose early one May morning

Chorus (after each verse):
Faill il o hill u ill o
Hiùraibh o 's na hòro èile
Faill il o hill u ill o

I heard news which gladdened me
That the able heroes had risen
To put spirit in the language of the Feinne
They had gathered together
Declaring the language of use
In the schools as well as English
Now there was a man
Now there was a man
Wise Fraser MacIntosh
Sing songs and tunes for him
Let him be praised to the heavens
By the Gaels wherever he goes

Hiùraibh o 's na hòro èile
Faill il o hill u ill o

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After I pasted all that in, I found the existent Mudcat thread I missed on a previous search https://mudcat.org/thread.cfm?threadid=122289