Bachelorettes...singing? Options

[IWuvKotomi]

Well the girls don't necessarily sing (except for one character...sort of...) but they do hum cute little tunes on occasions.

So has anyone else heard them humming before?

I've heard Mist hum a lot when she comes visit my farm in the afternoons.
Uzuki sometimes hums when she is training.
Eunice sometimes hums when she is sweeping and doing laundry.
I've heard Selphy hum while in the bookstore/library.
I heard Melody hum during the Harvest Festival.
And I think I've heard Rosetta hum in her store once.

But other than that, those are all the girls I've heard singing/humming besides the singing at the fountain area.

Has anyone heard Bianca or Cinnamon sing/hum? :/