"Blood of my Blood" pronunciation guide
I have more or less learned how to pronounce the words, after listening to the song many times, but I can see there are subtleties that I was missing. ("Tu" is pronounced "thoo"? I had no idea. <g>)
Kevin Walsh (composer of "OUTLANDER: The Musical") commented on Compuserve (here):
Being a lowland Scot I'm not a Gaelic speaker, so what is on the video is the phonetic pronunciation I used after Iain Livingstone had provided me with a spoken version. I hope you find it useful.The complete Gaelic lyrics are here, if you're interested.