Track 1: Alto muted - Douglas E. Wagner
Track 2: Alto predominant - Douglas E. Wagner
Track 3: Balanced Voices - Douglas E. Wagner
Track 4: Soprano 1 muted - Douglas E. Wagner
Track 5: Soprano 1 predominant - Douglas E. Wagner
Track 6: Soprano 2 muted - Douglas E. Wagner
Track 7: Soprano 2 predominant - Douglas E. Wagner
