Howard, David M <br/><br/>
Intonation drift in a capella soprano, alto, tenor, bass quartet singing with key modulation.  [electronic resource] 

 -  Journal of voice : official journal of the Voice Foundation  May 2007 
 - 300-15 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0892-1997 
<br/><br/><label>Standard No.: </label>10.1016/j.jvoice.2005.12.005  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cooperative Behavior<br/>Glottis--physiology<br/>Humans<br/>Occupations<br/>Sound Spectrography<br/>Voice Quality