Grounded in songs commonly attributed to "Anonymous", folk music reflects the concerns of everyday life in homespun melodies and arrangements that often achieve timeless perfection. Singers like Woody Guthrie and Lead Belly carried the old tunes into the 20th century, sparking a pop-crossover revival. Pete Seeger, Odetta and others set the stage for singer/songwriters like Bob Dylan, Joni Mitchell and Leonard Cohen, whose indelibly personal styles shaped the worldview of a generation.