Joan Baez, Buffy Sainte-Marie, Diana Rigg, Winona Ryder. (in that order) Joan and Buffy definitely had the biggest effect on me (since I was younger then), and Buffy the most powerful effect of all. But Joan was first...and first is really something to remember. She was an amazing sight in 1961, and amazing to hear as well. You wanted to lay down your life for her at a moment's notice.