Everybody who knows what a bass player does has an idea of who their favorite bassist is. What do you consider to be a good bass player? Is he the invisible guy who just thickens guitar parts or holds the bottom down by riding one note? Is he the guy who plays countermelodies or walks under the rhythm? Is he the guy who shows flash and prowess and can burn up a run in dead spots? Is there such a thing as better at all? Is Geddy Lee of Rush necessarily "better" than Cliff Williams of AC/DC?