Melodic (adjective)

1. Having a pleasing and harmonious melody.
2. Relating to melody, especially a pleasing and harmonious one.

Origin:

From greek μελωδία (melōdía, "song"), from μέλος (mélos, "song") + ᾠδή (ōidḗ, "od.e")

Examples:

1. The song had a beautiful melodic line.
2. The music was melodic and easy to listen to.
3. The melody was melodic and uplifting.
4. The singer had a melodic voice that was pleasing to the ear.
5. The song had a melodic structure that was easy to follow.