Like a violin, only a little bigger. The darkness of a cello, the sweetness of a violin. It sings a lullaby to the child in the crib. Loud and soft, harsh and gentle. It's the middle, it's the best of the four. Though it's not as popular, it's still what I do. It's still sings the song that I want to sing.
No words are needed to sing different tones. The instrument is my voice, the only one I speak with.