 Mitchell's fifth album, "For the Roses", was released in 1972.She then switched labels and began exploring more jazz-influenced melodic ideas, by way of lush pop textures, on 1974's "Court and Spark", which featured the radio hits "Help Me" and "Free Man in Paris" and became her best-selling album.Around 1975, Mitchell's vocal range began to shift from mezzo-soprano to more of a wide-ranging contralto.