prolonged unfulfilled desire or need

full of longing or unfulfilled desire; "those wistful little ads that the lovelorn place in the classifieds"

an unfulfilled expression of the soul

Yearning (1994) is a collaborative album by ambient musician Robert Rich and sarod player Lisa Moskow. It is based on the classical Indian musical form known as alap. Alap is the first and slowest section of a raga.