Jewish Bluegrass. Last week a nice article appeared in the Forward about Nefesh Mountain and other “Americana” styles of music mixing with Jewish music. http://forward.com/schmooze/359812/the-unexpected-smash-success-of-jewish-bluegrass-music/
There’s lots more music out there. Here’s a great YouTube of Nefesh Mountain singing their own version “Hinei Ma Tov.” Enjoy!