Wow, I really dislike that bass intro. Thankfully it gives way to a cool, slightly funky verse groove where Paul continues to give his half-spoken delivery.
The break after each verse has a cool harmonized guitar bit. After the second one there's a pretty anemic section that sounds like a solo starts and then gives up, fading into a pretty decent vocal bridge.
Ugh, here's that terrible bass riff again, with some oohs and screams on top of it now. Then we get a pretty rote guitar rhythm with a couple of high quality solos on top of it, which then slowly chugs its way down to another big rock ending with Paul wailing on top of it.
There are a number of strong parts to this song, but some weaker elements too. 6/10.