movement of a fourth (part 8, 1-4) he arranged for his instrument; he wrote fugues on themes by Legrenzi and Corelli18 (4. 6, 8), and a fugue and canzone (8. 6; 4. 10) recalling the manner of the great Roman organist, Frescobaldi, whose Fiori Musicali, published in 1635, he possessed.

But it would be a great mistake to imagine that Bach was at this time engrossed by the Italian masters. On the contrary Weimar was the place where he wrote the bulk of his organ works of the third branch, the preludes, fantasias, toccatas, and fugues, in which his strong religious sense united with his power of musical creation to build up masterpieces of a perfection never approached either before or since. The list of his works of this period is as follows:—

1. Three Preludes, in A minor, C, and G (4. 13; 8. 8, 11):

2. Three Fugues, in G minor, C, and G minor (4. 7; 8. 10, 12):

3. Fifteen Preludes and Fugues in A, F minor, C minor, G minor, E minor, C, G, and D; besides a collection of eight shorter ones (2. 3, 5, 6; 3. 5, 10; 4. 2, 3; 8. 5. i-viii.):

4. Three Toccatas and Fugues, in F, C, and D minor (3. 2, 8; 4. 4):

5. Two Fantasias and Fugues both in C minor (3. 6; 4. 12): to which must be added three single works, namely a Fantasia in C (8. 9); a Pastorale in F (1. 3); and the superb Passacaglio in C minor, well known to all organists worthy of the name (1. 2).

For the years succeeding those he spent at Weimar, Bach has left us, with one grand exception, no certain record on the organ; we shall see hereafter that he was otherwise occupied. But there is hardly a doubt that he took advantage of the exceptional opportunity offered by his Hamburg visit in 1720, to produce his famous Fantasia and Fugue in G minor (2. 4). It does not surprise us to find that the Fugue, which English musicians have personified as the Giant, left an abiding impression among the listeners.19 As we possess it, it has undergone a rigorous revision, to which, in common with the major part of his younger works, Bach afterwards submitted it when at Leipzig.