I am reading a book 'In Scotland Again' published in 1934, written by H.V. Morton, when I come upon a reference to Mouth tunes. To quote the author, "What is a Mod, and how did it begin? The word means gathering. It is the annual assembly of An Comunn Gaidhealach, a society founded in 1891 to preserve and develop the speech, music, folk-art and industry of the Scottish Gael. In other words, the Mod is to the highlands exactly what the Eisteddfod is to Wales."
The author attended this Mod and their learned about Puirt-a-beul, and this is what he said. "A mixed choir stood on the platform and sang gaelic verses which reproduced with amazing fidelity the rhythm and sound of the pipes playing a reel. The effect was gained by repeating tongue-twisting lines with incredible speed and changing from Strathspey time into quick reel time. The singing of these mouth tunes struck me as a most interesting feature in the Mod programme." He had me there. Here are some of the lines in the Gaelic.
Brochan lom tana lom, brochan lom sughain. 4x
Brochan tana tana tana, brochan tana sughain.4x
Brochan lom tana lom, brochan lom sughain. 4x
Thugaibh aran dha na Gillean leis a bhrochan sughain. 4x
etc etc.
Here was the most interesting part, and I would love to hear from someone who knows a source for recordings of Mouth tunes, or additional history about it.
It is said, and I am quoting the author again, "that certain apparently meaningless refrains in English song, such as "hey-down-derry," go back to incredibly remote times. The Druids are said to have had a song, ' Hei down, derry danno ', which summoned worshippers to the oak groves. And likewise some of the words to the Gaelic mouth music may have their origin in a time long before history.

