I join in a regular weekly jam whose origins go back some twenty-five years. In that time there have been professionals and amateurs of all stripes gathered together. Some of them, and these are the regulars, will never learn proper etiquette. It has become a friendship night rather than a jam night, sometimes with different tunes in different corners, always with someone out of tune, and seldom anyone truly listening and seriously tryng to contribute! Some excellent musicians never return after one night because of this, but the jam goes on. It is not recommended to let your jam degrade so, but the up-side is that new musicians are never intimidated and those old f***s who have stuck it out learn how to play in a scene a lot roudier than any bar, a truly valuable asset! Keep on jammin'!