Track 1: Alto 1 Muted
Track 2: Alto 1 Predominant
Track 3: Alto 2 Muted
Track 4: Alto 2 Predominant
Track 5: Balanced Voices
Track 6: Mezzo-Soprano Muted
Track 7: Mezzo-Soprano Predominant
Track 8: Soprano Muted
Track 9: Soprano Predominant
Track 10: Tenor Muted
