It is undeniable that Billie Holiday's singing changed in her later years. Her voice darkened and shifted to a lower range. Her economy of expression distilled her sound to its essence – a kind of heightened speech. The classic album Songs For Distingué Lovers, her best work of the 1950s, has also deepened and become burnished with time. Verve’s Acoustic Sounds Series features transfers from analog tapes and remastered 180-gram vinyl in deluxe gatefold packaging.