Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:2/2
K:G
['edBA G3 A BGDC', 'Bc dgBg dBGd dBGd gdBG AGAB cBce']  
X:1
L:1/8
M:2/2
K:G
 Bc | (3dcB gd edBA | G3 A BGDC | B,DGA BdcB |{c} BAAG A2 Bc | dBgd edBA | G3 A BGDC | B,DGE CEAc | 
 (3BAG (3AGF G2 :: Bc | dgBg dBGd | dBGd gdBG | AGAB cBce | (3agf (3gfe d2 Ac | BABc dBGd | 
 (3efg (3fga gedc | BGBd ecAF | (3ABA GF G2 :|  