Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
Q:1/8=160
M:6/8
K:G
['GBd gdB', 'g2 d edB']  
X:1
L:1/8
Q:1/8=160
M:6/8
K:G
 D | GBd gdB | d>ed d2 B | GBd gdB | A>BA A2 D | GBd gdB | def gfg | edB cBA | GAG G2 :| d | 
 g2 d edB | d>ed def | g2 d edB | A>BA A2 d | g2 d edB | def gfe | dcB cBA | G>AG G2 :|  