Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/8
M:6/8
K:Amin
['A/B/ cBA', 'e a^ga e=fd cAA', 'A2 e a^ga e=fd cAA A2 A/B/']  
X:1
L:1/8
M:6/8
K:Amin
 A/B/ | cBA eBd | cAA A2 A/B/ | cBA e^fg | BGG G2 A/B/ | cBA eBd | cea e2 d | cBA GAB | cAA A2 :| 
 e | a^ga e=fd | cAA A2 A/B/ | cBA e^fg | BGG G2 e | a^ga e=fd | cAA Aed | cBA GAB | cAA A2 || e | 
 a^ga e=fd | cAA A2 A/B/ | cBA e^fg | BGG G2 e | aeg fdB | ecA B^GE | ABc dBe | cAA A2 ||  