Construct a piece of music built on the supplied alphabet sequence and motif.
X:1
L:1/16
Q:1/4=70
M:2/4
K:Emin
['B2AB cBAG', 'g2fg baga']  
X:1
L:1/16
Q:1/4=70
M:2/4
K:Emin
 GF | E2Bc B2AB | cBAG F2GF | E2ef g2fe | defd B2AB | cBAG F2GA | BGFE d2ef | gefd eBAB | 
 G2F2 E2 :: gf | e2ef g2fg | baga f2gf | eBef g2fg | baga f2AB | cBAG F2GA | BGFE d2ef | 
 gefd eBAB | G2F2 E2 :|  