Utilize the alphabetic system of the specified musical pattern and the supplied melodic theme to create a piece of music.
X:1
L:1/8
M:3/4
K:Amin
['a2 ef', 'c2 cd cd e2 dc BA']  
X:1
L:1/8
M:3/4
K:Amin
 a2 ef ed | c2 A2 B2 | c2 AB cd | ed ef ga | a2 ef ef | g2 de de | f2 c2 d2 | e6 :: B2 Bc Bc | 
 d2 cB AG | c2 cd cd | e2 dc BA | c2 cd cd | e2 dc BA | d2 de de | f2 ed cB | cd B2 BA | A6 :|  