Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/8
M:6/8
K:G
['G2 A', 'z6 z6', 'E3 E6 E6 FGE', 'E2 B ege ded cBA BGE GAB', 'efg f3', 'AGA B3 edB gfe dcB AGA BAG']  
X:1
L:1/8
M:6/8
K:G
 A2 | B3 E3 | B3 G2 A | BEE BAG | F3 Bdc | BEE GEE | BEE G2 A | B3 B2 A | GEE E2 A | BGB BGB | 
 BEE G2 F | BGB BAG | F3 B3 | BGB BGE | BEE G2 F | G3 G2 A | GEE E2 || z | z6 | z6 | z6 | z6 | z6 | 
 z6 | z6 | z4 z G | e6 | dBG AGA | B3 B3 | dBG F2 f | gfe dcB | AGA B3 | AGE FGF | EFE E3 || E6 | 
 E6 | FGE FGF | EFE E3 | E6 | E6 | FGE FGE | E3 E3 | E6 | E6 | FGE FGF | EFE E3 | E6 | E6 | 
 FGE FGE | E3 E2 |: B | ege ded | cBA BGE | GAB dBB | BGE E2 c | BAG EDE | GAB cBA | BAG EAG | 
 EFE E2 :| B | Bee efg | fdf edA | B e2 efg | f3 e2 f | gfe dcB | AFA BGE | AGE FGF | EFE E2 B | 
 e3 efg | f3 edA | Bee efg | f3 e2 f | gfe dcB | A F2 G2 E | FGE FGF | EFE E2 || B | edB edB | 
 AGA BGE | e3 edB | AGA B3 | edB gfe | dcB AGA | BAG EAG | EFE E2 e | edB BGB | AGA BGE | BGB BGB | 
 AGA B3 | edB gfe | dcB AGA | BAG EAG | EFE E2 ||  