Track 1: 15 Minutes TTBB - Accompaniment Track - Gerald Gurss-1

Track 2: 15 Minutes TTBB - Balanced Voices - Gerald Gurss-1

Track 3: 15 Minutes TTBB - Bass 1a Muted - Gerald Gurss-1

Track 4: 15 Minutes TTBB - Bass 1a Predominant - Gerald Gurss-1

Track 5: 15 Minutes TTBB - Bass 1b Muted - Gerald Gurss-1

Track 6: 15 Minutes TTBB - Bass 1b Predominant - Gerald Gurss-1

Track 7: 15 Minutes TTBB - Bass 2 Muted - Gerald Gurss-1

Track 8: 15 Minutes TTBB - Bass 2 Predominant - Gerald Gurss-1

Track 9: 15 Minutes TTBB - Tenor 1a Muted - Gerald Gurss-1

Track 10: 15 Minutes TTBB - Tenor 1a Predominant - Gerald Gurss-1

Track 11: 15 Minutes TTBB - Tenor 1b Muted - Gerald Gurss-1

Track 12: 15 Minutes TTBB - Tenor 1b Predominant - Gerald Gurss-1

Track 13: 15 Minutes TTBB - Tenor 2a Muted - Gerald Gurss-1

Track 14: 15 Minutes TTBB - Tenor 2a Predominant - Gerald Gurss-1

Track 15: 15 Minutes TTBB - Tenor 2b Muted - Gerald Gurss-1

Track 16: 15 Minutes TTBB - Tenor 2b Predominant - Gerald Gurss-1