Joni Mitchell biography 'Traveling' tracks a journey that changed popular music

Joni Mitchell — an only child born on the Canadian prairies — reinvented herself for more than six decades, aptly singing “I’m on a lonely road, and I am traveling, traveling, traveling, looking for something, what can it be?”

NPR music critic and author Ann Powers’ new biography, “Traveling: On the Path of Joni Mitchell” follows her wanderings and delves deep into the influences — the people, trends and circumstances — that paved Mitchell’s longer than 60-year journey.