so i have recently gotten into the punk rock music. bass parts are very simple in these kind of bands, because thats the style. Usually no more than 4-8 notes are played in the song unless the is a bass solo. I use a pick, and i have notice while watching some performances bypunk rock bass players that they appear to be completely strumming up and down yet you can only hear the one note being played. Are they really playing all four strings, or do they just somehow make it appear that way. How would i come about playing like this myself?