sorry for the double post but I thought of a few more... To be honest I associate most Old Time (pre bluegrass american fiddle and banjo music) with bushcraft, just because it was born in the Appalachians of people who lived in cabins, to whom wilderness skills were a daily necessity. I really like Old Time!
This one by corn potato string and again, for the birdwatchers, see how many bird calls you can spot:
[video=youtube;cHPcGhaTGAc]https://www.youtube.com/watch?v=cHPcGhaTGAc[/video]
Old Molly Hare, a song about Rabbits
https://www.youtube.com/watch?v=UNUYWC-euzo
Poor Wayfaring Stranger (a la Johnny Cash, but more like it would have sounded in the old days)
https://www.youtube.com/watch?v=D0wb_vgg7vw
I'm Longing for Home (its actually about wanting to be in heaven but taken literally the chorus is pretty relevant to wet cold bushcraft evenings)
https://www.youtube.com/watch?v=JPBuF4T2cU0
Distant Land to Roam - relevant for when going on a long trip
https://www.youtube.com/watch?v=mHARd-VtObU
Hand me Down my Walking cane
https://www.youtube.com/watch?v=4lJ4O9jN5ek
Thats all I can think of for now, but I'm sure there are loads... with old-time usually if they're not about religion they're about being outdoors or murder!