air, aria, bel canto, canto, cantus, descant, diapason, dulcetness, euphoniousness, euphony, harmony, lay, line, lyrics, measure, mellifluence, mellifluousness, melodia, melodic line, melodiousness, musical quality, musical sound, musicality, note, refrain, solo, solo part, song, soprano part, strain, sweetness, theme, tonality, tone, treble, tune, tunefulness, warble