it didnt matter , only phrases mattered , disconnected phrases that carried all the meaning that was possible or even necessary to his art he was a strange hypnotic force that stalked back and forth along the iron cat walk , rocking like a psychotic , glaring down into the crowd , picking out people with his cold little eyes and then attacking them with the amplified power of his voice like a killer whale striking a seal from below where the base beat was throbbing .