vocalise

(from the article `vocal music`) Vocal compositions with no articulated text are called vocalises (vocalizzi in Italian). Although such works have been traditionally used as ...
Found on http://www.britannica.com/eb/a-z/v/32

vocalise

verb utter speech sounds
Found on http://wordnetweb.princeton.edu/perl/webwn?s=vocalise

Vocalise

A textless vocal melody, as in an exercise or concert piece.
Found on http://www.superglossary.com/Glossary/Entertainment/Music/
No exact match found