The songs are the same, and you'll recognise them instantly if you're at all familiar with the originals. There's an occasional lyric change but nothing disrespectful. CRASS never got the recognition they deserved for their lyrics - hearing them delivered in such a clear manner gives them a new, modern power that finds much of what's said still relevant, despite being decades old.
Songs of Note: I Ain't Thick; System System
4 Punk is Folk is Dead out of 5