Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/8
Q:1/8=333
M:2/2
K:G
['G2 dG eGdG dedB AGED GFGA BABd', 'agab gabg agef g2 bg agab gedB']  
X:1
L:1/8
Q:1/8=333
M:2/2
K:G
 G2 dG eGdG | dedB AGED | GFGA BABd |1 gedB AGED :|2 gedB AGEB :| | g2 bg agab | gabg agef | 
 g2 bg agab | gedB AGEB | gabg gabg | ga (3bag a2 ga | (3(bag) gf gabf | gedB AGED |]  