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Re:Dot matrix printer playing “Eye of the Tiger” [video] by tlarkworthy on Sunday March 29, 2015 @08:58PM (#9287144)
The music MIDI-to-CNC converter is open:-

http://hackaday.com/2013/04/21/3d-printing-some-sweet-music/

I have tested it, it works! https://www.youtube.com/watch?v=o7Zben7GJcA

Re:Dot matrix printer playing “Eye of the Tiger” [video] by TheLoneWolfling on Sunday March 29, 2015 @10:12PM (#9287308)
Now try to get recognizable speech. Now that would be creepy.

(Unfortunately, I don't think it's possible without "deeper" control.)