97
2. answer: subject imitated in another voice
3. countersubject: dif fer ent theme heard against the
subject
4. exposition: first section, subject presented in
each voice one time
5. episodes: interludes lacking the subject
6. contrapuntal devices: augmentation, diminution,
retrograde, inversion, stretto
B. Works encountered in text
1. The Young Person’s Guide to the Orchestra, by
Britten
2. Messiah choruses, by Handel
3. Wachet auf, opening movement, by J. S. Bach
III. Bach’s Keyboard Fugues
A. The Well- Tempered Clavier
1. two volumes: 24 preludes and fugues in each
2. intended as teaching aid: expressive and techni–
cal challenges
3. written for new tuning system
B. Contrapunctus I, from The Art of Fugue
1. 14 fugues, 4 canons
2. systematic exploration of fugal devices
3. contrapuntal mastery; ultimate achievement
4. keyboard music; also recorded by orchestras,
chamber ensembles
C. LG 18: Bach: Contrapunctus 1, from The Art of
Fugue (1749)
1. four– voice fugue
2. fugue subject outlines D minor triad
3. extended middle section: false entries, overlap–
ping of subjects (stretto)
4. tonic reestablished: final statement of answer
over sustained pedal in bass
5. final chord: major (common feature in Baroque
music)
OUTLINE
I. Keyboard Instruments in the Baroque Era
A. Technological advances, new levels of refinement
1. musicians broaden technique
2. keyboards inherently suited to polyphonic
per for mance
B. Harpsichord
1. strings plucked by quills
2. tone not sustained
3. dynamic extremes not pos si ble, only subtle nuances
C. Organ
1. German builders 1600s, 1700s
a. sets of pipes, contrasting tone colors
b. multiple keyboards, terraced dynamics
2. J. S. Bach: renowned keyboard player
a. sought– after con sul tant to church- organ
builders
b. famous for improvisation
D. Keyboard forms
1. toccata and prelude
a. free- form pieces based on improvisation
(often written out later)
b. showcase performer’s dexterity
c. highly contrasting musical ideas and tempos
d. often paired with or ga nized form (e.g., Toc–
cata and Fugue in D Minor by J. S. Bach)
2. fugue: systematic elaboration of short musical
ideas
a. written for solo keyboard, groups of instru–
ments, voices
II. The Fugue and Its Devices
A. Fugue: contrapuntal composition based on imitation
1. subject: main theme, unifying idea; single theme
pervades
CHAPTERfi28 Pro cess as Meaning: Bach and the Fugue