Nicola Vicentino

Frontispiece in the Vicentino's treatise on music. Inscriptions: 1 (outer circle) Incerta et occulta scientiae tuae manifestasti mihi;A verse from Ps.50 2 (inner circle) Archicymbali divisionis chromaticique ac enarmonici generis praticae inventor;Inventor of practical division of chromatic and enharmonic genus. 3 (under the portrait) Nicolas Vicentinus anno aetatis suae XXXXIIIINichola Vicentino, 44 years old. Nicola Vicentino (1511 – 1575 or 1576) was an Italian music theorist and composer of the Renaissance. He was one of the most visionary musicians of the age, inventing, among other things, a microtonal keyboard. Provided by Wikipedia
2
by Vicentino, Nicola 1511-1576
Published 1555
Book
3
by Vicentino, Nicola 1511-1576
Published 1959
Book