Her singing was sweet and lingering, deeply moving.
Tips
usage
Core idea: softness and indirectness. 委婉 means tactful, mild (not blunt); 婉言 is gentle wording; 婉转 describes a sweet, winding melody or a roundabout, considerate way of speaking.
Left woman radical, the indexing component. It groups the character with words for grace and gentleness traditionally associated with this radical. Same family as 娇 and 媚.
Right 宛 supplies the sound — wǎn with no tone shift. Its own sense of 'winding, roundabout' also harmonizes with the indirect, gentle meaning, so it carries a faint semantic echo. The same phonetic appears in 碗.