There are a couple of different conceptions people have about what pop songs are and what goes into making them. The first, which is the peg on which rock and roll hangs its hat, favors the idea of spontaneous utterance; bands working after this model do their best to hide whatever signs might be in evidence that real work and thought have gone into the process of making their songs. Techniques to preserve the illusion of spontaneity range from the obvious (leaving in a stray mistake or two) to the absurd (having the singer shout “c’mon!” right before the guitar solo, thereby asking the listener to accept the audibly false proposition that the singer and guitarist were within earshot of each other at the moment in question).