11.  And opera buffs tend to be a strong-minded bunch when it comes to the unsullied purity of the human voice.

12.  And the most versatile of all musical instruments is the human voice itself.

13.  And the trained human voice in its pure form, unencumbered by amplification or alteration, has an almost religious significance.

14.  And the human voice could hum hopefully, or sound ominious, as the film unfolded.

15.  Any instrument with the capacity to slide, including the human voice, of course, can activate these spaces between the pitches.

16.  As John demonstrated over and over again, never have a human voice and a grand piano seemed more designed for each other.

17.  As it turned out, of course, one of them was the transmission of the human voice.

18.  As it is, most speech recognition systems rely on recorded human voices to do most of the talking.

19.  Beethoven bends the human voice against its will to his musical designs.

20.  Before this work, Heggie was known for songs that artfully flatter the human voice.