Today's dinosaurs--the birds--have a uniquely avian piece of anatomy called the syrinx, located at the base of the trachea. Because it is located at a point where the trachea branches to the lungs, the syrinx makes birdsong a possibility.

The syrinx is an anatomy unique to birds--the non-avian dinosaurs, apparently, didn't have it--which makes it a competitor against that other vocal organ, the larynx.

Is it possible for one animal to have the syrinx AND the larynx in one body? If no, then why not? If yes, then what would the advantages of having both vocal organs be?