Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/8
M:2/2
K:G
['G,A,B,C DGFG', 'dcBA GABG cBAG FdAF DCB,A, G,A,B,C DGFG']  
X:1
L:1/8
M:2/2
K:G
 G,A,B,C DGFG | CGFG B,GFG | G,A,B,C DGFG | cBAG FAdc | BDBc dGFG | CGFG B,GFG | FGFG BAGF |1 
 GEDB, G,G,G,A, :|2 GEDB, G,2 dc || Bcd (3AcB edcB | AB (3cBA dcBA | GABG cBAG | FdAF DCB,A, | 
 G,A,B,C DGFG | CGFG DGFG | FGFG BAGF |1 GEDB, G,Bdc :|  