Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:4/4
K:Ador
['eg g2', 'agef g2 eg dgeg gbaf gedg a2']  
X:1
L:1/8
M:4/4
K:Ador
|: EAAG A2 Ad | eg g2 (3efg ed | BGGF{A} G2 GE | DEGA BA A2 | EAAG{B} A2 Bd | eg g2 eg g2 | 
 eggf gaba |1 gedB BAAG :|2 gedB BAeg |: a2 eg ageg | agbg agef | g2 eg dgeg | gbaf gedg | 
 a2 eg ageg | agbg aged | eg g2 gaba |1 gedB BAeg :|2 gedB BAFA ||  