dulcet (adj.)

• affable
• agreeable
• amiable
• amicable
• appealing
• ariose
• blissful
• canorous
• cantabile
• catchy
• cheerful
• compatible
• complaisant
• congenial
• cordial
• desirable
• engaging
• enjoyable
• euphonic
• euphonious
• euphonous
• fair
• felicitous
• fine
• genial
• golden
• good
• goodly
• gracious
• grateful
• gratifying
• harmonious
• honeyed
• likable
• mellifluous
• mellisonant
• mellow
• melodic
• melodious
• musical
• nice
• pleasant
• pleasing
• pleasurable
• rewarding
• rich
• satisfying
• silver-tongued
• silvery
• singable
• songful
• songlike
• sonorous
• sweet
• tuneful
• welcome
• winning
• winsome