American singer Carrie Marshall combines the sway of a bossa nova rhythm with silky smooth vocals and the added sweetening of Appalachian-style fiddle on “Southern Shade of Blue,” a breezily enjoyable original tune.

American singer Carrie Marshall combines the sway of a bossa nova rhythm with silky smooth vocals and the added sweetening of Appalachian-style fiddle on “Southern Shade of Blue,” a breezily enjoyable original tune.