Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:6/8
K:Emin
['BAB g2 a fge ^dec', 'gfg fdg fga |1[M:9/8] bag fga g2']  
X:1
L:1/8
M:6/8
K:Emin
 BAB g2 a | fge ^dec |[M:9/8] BEE cEE ^def |[M:6/8] BAB g2 a | fge ^dec |1[M:9/8] BGE AFD E2 A :|2 
[M:9/8] BGE AFD FGA ||[M:6/8] B2 c A2 B | GBd gfg | fdg agf |[M:9/8] dGG eGG fdc | 
[M:6/8] B2 c A2 B | GBd gfg | fdg fga |1[M:9/8] bag fga g2 d :|2[M:9/8] bga fge ^d2 c ||  