During the late '70s and early '80s, New Wave was a catch-all term for the music that directly followed punk rock; often, the term encompassed punk itself, as well. In retrospect, it became clear that the music following punk could be divided, more or less, into two categories -- post-punk and new wave. Where post-punk was arty, difficult, and challenging, new wave was pop music, pure and simple. It retained the fresh vigor and irreverence of punk music, as well as a fascination with electronics, style, and art. Therefore, there was a lot of stylistic diversity to new wave. It meant the nervy power pop of bands like XTC and Nick Lowe, but it also meant synth rockers like Gary Numan or rock revivalists like Graham Parker and Rockpile.