Lilt (noun)

1. A musical quality of a rising and falling melody.
2. A musical quality of a playful or light-hearted melody.

Origin:

1620s, from middle english lute "song," from old english hlyt "sound, noise," from proto-germanic *hleut- (compare old high german hluz "noise," german laut "sound"), from pie *klaut- "to make noise" (compare lithuanian klaidus "noisy," old church slavonic klopotu "noise," latin clangere "to clang"),.

Examples:

1. The song had a lilt to it that made it sound cheerful.
2. The lilt of the fiddler's music made everyone want to dance.
3. The singer's voice had a lilt that was pleasant to listen to.
4. The lilt of the Scottish accent gave the speech a charming quality.
5. The melody had a lilt that made it feel like a dance song.