The Cumberland Quartet Acoustic Hymns, Vol. 1 Haun & Ward Entertainment On “Acoustic Hymns, Vol. 1,” the full-voiced harmonies of The Cumberland Quartet are merged with Appalachian instrumentation and the occasional piano lick. The compact disc (CD) separates itself from traditional bluegrass recordings due to its lack of stereotypical pinched, nasal vocal tones. At the same time, the CD stands…