Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:4/4
K:Dmin
['G GA Ae ed d^c', 'BA AG GF FG GF AG FE']  
X:1
L:1/8
M:4/4
K:Dmin
 z3 D |"Dm" DF FA | Ad df | fe ed | A4 | fe ed | dc"D7" cB |"Gm" BA AG | G3 G |"A7" GA Ae | 
 ed d^c | ^cB BA | AG GF |"Dm" FG GF |"A7" AG FE |1"Dm" F4 :|2"Dm" D4 |: z Ade |"Dm" f3 e | 
"A7" (fe) d^c |"Dm" d2 A2- | A2 z A | d^c dc |"D7" d=c BA |"Gm" (AB) G2- | G2 z G |"A7" GA Ae | 
 ed d^c | ^cB BA | AG GF | FG GF | AG FE |1"Dm" F4 :|2"Dm" D4 |]  