Pure Vowels ist the third of four CDs in Ariella Vaccarino's Voice Lesson to Go series. This volume is a voice lesson compiled of vocal exercises concentrating on the different vowels we sing and their proper vocal production. The vocalizes are separated by the vowels: ah, ey, ee, oh, oo, and i. The first half of the CD is a walk through and explanation of each new exercise with examples. Part two is straight piano accompaniment to all the exercies to giving the singer complete independence.