Guido of Arezzo and his protector, Bishop Theodal, playing on a Monochord 1 Orlando Gibbons. After Grignon’s engraving in Hawkins 7 Title-page of the first English engraved Clavier Music, 1611 17 From the Weimar “Wunderbuch,” a Clavichord of about 1440 20 From the Weimar “Wunderbuch,” Primitive Spinet, of about 1440 21 A Concerted Performance 25 Page from “Parthenia,” the first English engraved Clavier Music, 1611 29 John Bull, at the age of 26 33 Henry Purcell, 1658-1695 36 The so-called “Hand” of Guido of Arezzo 38 D’Anglebert, Chamber Musician to Louis XIV., after Mignard 40 François Couperin, “Le Grand” 54 Portrait of Louis Marchand 66 Rameau, out walking 67 Old engraving after Wagniger’s design 68 Adrian Willaert, of Venice 72 Frescobaldi 73 Virginal in shape of a work-box 81 The same opened 81 The instrument taken out 81 Italian cembalo, from a monastery, of the 18th century 83 Old engraving representing Scarlatti playing a Harpsichord with two rows of keys 85 An Octave Spinet 90 German Clavichord, 17th century, “gebunden” 91 Konrad Pau(l)mann, the first German writer for keyed instruments 95 Skull of Sebastian Bach 98 The Fifteenth Sinfonia of John Sebastian Bach, from the Royal Musikbibliothek, Berlin 105 John Mattheson, at the age of 37 115 Pedal-clavichord 120 “Bundfrei” Clavichord 124 Philip Emanuel Bach 126 F. W. Marpurg, Theoretician and Clavier Teacher. 1718-1795 130 Streicher’s Pianoforte and Concert Saloon 135 Mary Coswey with the Orphica 146 Beginning of Mozart’s A minor Sonata 153 Upright Hammer-clavier, called the “Giraffe” 156 Beethoven at the age of 31 157