Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
Q:1/2=60
M:2/2
K:G
['dBGE cAFD', 'd g/a/ bdTdc acTcB gBTBA fATAG dddd']  
X:1
L:1/8
Q:1/2=60
M:2/2
K:G
|: B/c/ | dBGE cAFD | GD AD (G/A/B) AD | dBGE cAFD | (c/d/e) Ad ^c/d/e/c/ d || g/a/ | bdTdc acTcB | 
 gBTBA fATAG | dddd Td3 c | BA/G/ AG/F/ G2"^NB" z |]  