Songbook of the Scottish Republican Socialist Movement:

http://www.scottishrepublicansocialistmovement.org/Pages/SRSMSongbook.aspx

I knew those guys back in the late 70s, while they were planning to blow up the Glasgow Stock Exchange (an action their site is unaccountably silent about and which I would have told them wasn't a particularly brilliant idea if I'd been asked). I thought they were a bunch of grudge-ridden macho fantasists, but hey the site does have a collection of okay songs. I never heard any of them singing them at the time, though.