Craft a musical piece that integrates the provided melodic theme and the corresponding alphabetical pattern.
X:1
L:1/4
M:4/4
K:C
['G G']  
X:1
L:1/4
M:4/4
K:C
 G | G c c d | c2 B2 | G c c d | c3 G | G c c d | c3 G | F E D C | G2 G G | F3 E | D D C2 | G2 c2 | 
 c2 G G | F3 E | D D G2 | (c4 | c3) ||  