Create a musical composition employing the given alphabetic structure and melodic theme.
X:1
L:1/8
Q:1/8=128
M:4/4
K:C
['G z']  
X:1
L:1/8
Q:1/8=128
M:4/4
K:C
|: c | B<c c>G e>c c>c | G<c c>G e3 e | e<f f>c A<c c>A | B<d d>B G z G z | B<c c>G e>c c>c | 
 G<c c>G e3 e | e<f f>f B<c c>c | d>B G>B c2 z2 | c<A A>G E<A A>B | c<A A>c e3 e | 
 d<B B>A G<E E>G | ^F<D D>F E2 z2 | c<A A>G F<A A>c | ^F<A A>F G z G z | E<F F>F B<c c>c | 
 d>B G>B | c3 :|  