UPDATE: We've mixed things up with our latest best rock songs update, adding a couple of bands not yet seen on our hall of fame. Whether that be a moment of love, war, rawness, sex - in three minutes or more a great rock song can take those emotions and transcend them into something timeless, usually with an epic riff or two and the snarl of a vocal. The greatest ever rock songs are the ones that capture a moment in time. What makes the best rock song? Is it the vocal, the guitar, the noodling solo in the middle? Well, it's all and none of these as this list proves.