Well, yes. Thankyou once again to the ISPWOPO (Institute for Slowly and Painstakingly Working Out the Painfully Obvious).
with apologies to the late Douglas Adams.
On the other hand, I'd like to see the reuslts of a study on the possible cathartic benefits or dangers of SINGING the songs. I suspect that the 'singer' of Rage Against the Machine feels a lot of release after screaming "Fuck you I won't do what you tell me" as many times as that in a row. I know I do when I yell along.