 The Kingston Trio's popularity would be followed by that of Joan Baez, whose debut album "Joan Baez", reached the top ten in late 1960 and remained on the Billboard charts for over two years.Baez's early albums contained mostly traditional material such as the Scottish ballad, "Mary Hamilton", as well as many covers of melancholy ballads that had appeared in Harry Smith's "Anthology of American Folk Music", such as "The Wagoner's Lad" and "The Butcher Boy".She did not try to imitate the singing style of her source material, however, but used a rich soprano with vibrato.