Probably from the grim decibels of an overloud rumbling bass, a crazed drummer and a thrashing guititititar thrasher, i KNEW SUCH NOISE WAS NOT SAFE, now you know why it ios called rock....cripes now may I recommend a soothing aCCORDION CANTATA, THRILL TO THE SOUND OF THIS EFFERVESCENT DELIGHT, NO ROCKING HOUSES AND FAILING FOUNDATIONS WE SHOULD ALL LOVE TORALF TOLLEFSON...