All possible 3-tone-chords (680) inbetween a duodecime. In contrast
to Tom Johnson's Chord Catalogue (1985), the order is randomly
Played live by Heloisa Amaral (Part of Audioguide.)
Beethoven's Piano Sonata "Pathétique" Op.13 (first movement)
order of Amplitude.
on any instrument: play chromatic scale upwards (or downwards), as
soft as possible, in moderate tempo, the last possible tone as loud as
possible & sustained.