Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/8
M:4/4
K:C
['G,C C>B,B,B, B,2 B,A, A,>G,G,G, G,2 G,G,']  
X:1
L:1/8
M:4/4
K:C
 C,E, | G,2 G,2 A,2 B,2 | C4 G,2 G,A, | G,>F,F,F, F,2 A,G, | G,>E,E,E, E,2 E,G, | C2 C2 D2 D2 | 
 E4 D2 A,D | C2 C2 CB,A,B, | C4 z2 G,C | C>B,B,B, B,2 B,A, | A,>G,G,G, G,2 G,G, | G,DG,G,G,zG,G, | 
 G,CG,G, G,2 G,C | C>B,B,B, B,2 B,A, | A,>G,G,G, G,2 G,G, | A,A,B,B,CCDD | E4 EFA,D | 
 CzE,A,G,zD,E, | C,2 z4 |]  