achingly sweet
agreeable
agreeable-sounding
appealing
ariose
arioso
canorous
cantabile
catchy
dulcet
euphonic
euphonious
euphonous
fine-toned
golden
golden-tongued
golden-voiced
harmonic
harmonious
honeyed
melic
mellifluent
mellifluous
mellisonant
mellow
melodic
melodious
music-flowing
music-like
musical
pleasant
pleasant-sounding
rhythmic
rich
silver-toned
silver-tongued
silver-voiced
silvery
singable
smooth
songful
songlike
sonorous
sweet
sweet-flowing
sweet-sounding
tunable
tuned
blithe
choral
deep-toned
gladsome
joyous
lilting
long-drawn
lugubrious
lyrical
plaintive
raucous
resonant
singsong
tuneless
vesper
vibrant