1892 J. A. Thomson xxiv. 508 Of importance are the complex muscles associated with the song-box.
1917 19 161 One way of answering it is to study the mechanism of the throat and learn the parts of that mysterious little song-box called the syrinx.
2009 J. L. Davis 168 The syrinx, or song box as it is sometimes called to distinguish it from the mammalian voice box, is located where the trachea joins the two bronchi at the lungs.