I'm not sure that I understand the question completely, but I will do my best to answer. If one was to say "something sounds like folk/folks" it wouldn't make much sense. Folks can be used as a noun in such sentences like "ok folks, that's all for today" or "some folks just don't get it". So, basically it can be used in place of the word people, guys, everybody, or yall. It can also be used to recognize that someone is your family. "These are my folks" means that these people are my family.
As an adjective you can say "it sounds like folk music" which is basically like old music or raegae.
All in all, to what you have asked, maybe you could say "it sounds like my folks" meaning whatever soise you're hearing sou ds like your family. Hopefully this helped!