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LESSON XXXIX |
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The Larger Forms
. To play extempore in the larger forms demands, on the part of the performer, the very highest abilities developed to their furthest limit. It is not expected that many students will go much further than expressing themselves in an intelligent and pleasing manner in the smaller forms. But when this power has been successfully acquired, the ambition to go still further up the hill of the Muses will often arise.
Of the larger forms may be mentioned:
(i) The ordinary Variations form.
(2) The Ground Bass.
(3) The Rondo.
(4) The Fantasia.
(5) The Sonata.
(6) The Fugue.
(1) To play impromptu variations, a well-known theme should be chosen, one that is simple and short, without any very striking characteristics. These latter may be supplied in the development. Variations may be constructed by employing many possible devices. Those that have already been studied in connection with melodic movement may again be referred to. Among other devices may be included:
(a) Passing-notes.
(b) Suspensions.
(c) Chord-line figuration.
(d) Alteration of tempo.
(e) Alteration of time, from duple to triple, etc.
(f) Change of mode.
(g) Reharmonizing.
(h) Contrapuntal treatment.
(2) The ground bass is a special form of variation, and consists of the taking of a few simple tones, and repeating |
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