A beautiful song sung by a great singer is an example of something that would be described as being a mellifluous sound.
Origin of mellifluousClassical Latin mellifluus from mel (gen. mellis), honey (see mildew) + fluere, to flow: see fluctuate
Origin of mellifluousMiddle English from Late Latin mellifluus Latin mel mell- honey ; see melit- in Indo-European roots.Latin -fluus flowing ; see bhleu- in Indo-European roots.
(comparative more mellifluous, superlative most mellifluous)
- Flowing like honey.
- Sweet, smooth and musical; pleasant to hear (generally used of a person's voice, tone or writing style).
Mellifluous (like honey) is more likely to be applied to a person's writing style while dulcet (“sweet") would only be appropriate for describing audible tone, voice or tenor.