Answer:
sweet ; best melodious, melodic, musical, lyrical, sweet, lyric, euphonious, harmonious, mellow, mellifluous, tuneful, dulcet, mellifluent, symphonious, sweet-sounding, harmonic, euphonic, silvery, symphonic, lilting, honeyed, soft, sweet-toned, pleasant, resonant, soothing, smooth, tuned, pleasing, harmonizing, canorous, clear, ...