Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
Q:1/8=320
M:6/8
K:G
['B2 e dBG', 'B2 A g2 g gab ded dBG']  
X:1
L:1/8
Q:1/8=320
M:6/8
K:G
 G | B2 e dBG | A>BA A2 G | B2 e dBG | d>BB B2 A | B2 e dBG | A>BA g2 a | geg dBG | BcB B2 :| A | 
 g2 g gab | ded dBG | gfe gab | gee e2 d | def gfe | def gab | geg dBG | BcB B2 :|  