Audio track
1 Open violin A-String
2 Roughness of two sine waves
3 Roughness of a violin playing double stops
Various chords played on a pipe organ:
4 Major triad (open position)
5 Major triad (closed position)
6 Minor triad (closed position)
7 Dominant seventh
8 Dominant seventh (fourth inversion)
9 Minor-minor seventh
10 Wholly diminished
11 Quartal tetrachord
12 Pentatonic cluster
13 Diatonic cluster
14 Whole-tone cluster
15 Twelve-tone cluster
16 Violin playing A4, first ordinario then with a mute
17 Soprano singing A4, first with a bright then with a dark tone
18 Two different timbres on a violin A-String
19 Soprano singing A4, first with a “sweet” tone then with an “ugly” tone
20 Violin playing A4 ordinario
21 Violin playing A4 sul ponticello