Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
Q:1/8=160
M:9/8
K:G
['dBG GBG AGE dBG GBd efg dBG', 'def gfg']  
X:1
L:1/8
Q:1/8=160
M:9/8
K:G
 dBG GBG AGE | dBG GBd efg | dBG G2 B AGE | gbg f/g/af e2 g :| def gfg edB | def gfg a2 B/c/ | 
 def gfg edB | g/a/bg faf edB | def gfg edB | def gfg a2 B/c/ | bag agf gfe | dBG GBd efg |]  