It’s the weekend and I don’t do weekends in Blogosphere as you know, so I’m going to keep this short. The winner in my last showdown is…JOHN HARTFORD with a 7 to 6 victory. [tweetthis]Piece of My Heart #BoTB 3rd round winner is…#JOHNHARTFORD #coverbands[/tweetthis]   Little did I know John Hartford penned this oldie that I came to associate mostly with the late Glenn Campbell.  Do you have a favorite Hartford song to share? A special thanks to everyone who took part in the showdown. Next battle is set for the 15th, so mark your calendar to play along in…