Triadex Muse algorithmic music generator. Invented by Edward Fredkin and Marvin Minsky and manufactured by Triadex Inc., Newton, Massachusetts, USA, in 1971-1972. The Triadex Muse uses digital logic circuits to produce a sequence of notes based on the settings of various parameters. The front panel sliders, which control the melodies that are generated, allow for the possibility of 14 trillion musical note combinations. The musical computer is housed in a wedge shaped finished wood and brushed aluminium case. The four small sliders in the lower-left control Volume, Tempo, Pitch, and Fine Pitch. The switches to either side of the sliders are used to start and stop the sequence, or to step through it note-by-note. Of the eight larger sliders on the right, four control the musical intervals used (labelled A, B, C, and D), and four control the theme (labelled W, X, Y, and Z). There is also a 'Rest' toggle switch at the lower right which acts as a "lowest note". Located at the upper left of the unit panel is the internal speaker. Additionally, the Muse can be companioned with that of another Muse, allowing for multi-part compositions.