t_: t-- t4

I
r t
a
Z I
a ' 7
Li
1 { t
- t
l :
l;,
t
l ' 7
v - t
-
r Z
l , -
1-'-.
a :
E,
L-';-
- I
I
J
I
I J I
. J
I
r l
I
;
i
=-
?4
L4
J
J
--)a
)
Figu re 6.12
Schubert:
Impromptu op. 90, no. l, D. g99. m.2_9.
Contrasting Period
Figure
6.13
Folk Song: "The Ash Grove."
Three-Phrase period
Frgure
6.14
In figure 6'12 only the three final notes of the second phrase are different from the first.
Sarne as phrasE--
Phrase I
Authentic cadence
A contrasting
period results when the two phrases
are not similar in melodic content.
Phrase 1 Half cadence
Phrase 2 Perfect authentic cadence
While most periods are composed of just two phrases, those of three (and even more)
do occur' The three phrases may consist of A A B lantecedent, antecedenr, consequent) or
A B B (antecedent, consequent, consequent). The third phrase must end with a stronger
cadence than either of the other two.
i''-'-ri.rrrren: Sonata (path6tique) in c Minor, op. r3, III (Rondo), m. l7r-rg1.
Phrase 1
Melodic Organization
Phrase
2
ase 2 contrasts phrase rhythm
Half cadence
Half cadence
115