Compose a piece of music using the specified letter-based musical form and incorporating the assigned motif.
X:1
L:1/8
M:4/4
K:A
['e<c a2', 'c>AE>A C>EA>B c>Ae>c a>ec>A']  
X:1
L:1/8
M:4/4
K:A
|: e<c a2 e<c a2 | e>ca>e f>ec>A | d<B b2 d<B b2 | d>fb>a (3gfe (3dcB | e<c a2 e<c a2 | 
 e>ca>e f>ec>A | d>ef>g a>ec>A | f>ed>c (3BcB A2 :: c>AE>A C>EA>B | c>Ae>c a>ec>A | d>BF>B D>FB>c | 
 d>Bb>a (3gfe (3dcB | c>AE>A C>EA>B | c>Ae>c a>ec>A | d>ef>g a>ec>A | f>ed>c (3BcB A2 :|  