Vowels

A formant is a broad resonance produced by the pharynx and oral cavity.  By following the peak frequencies as a series of vowels are elided, one can identify the lowest three formants for each sung vowel.  The third formant (2300-2700Hz) doesn't move much in frequency as the vowel changes.  You may also notice a fourth formant, known as the singer's formant.

Play vowel elision

The following files sound different simulated vowel sounds with a fundamental frequency of 110Hz. 

Vowel = ah
eh
ee
oh
oo