Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:4/4
K:G
['EFGA B2 ef gfed', 'E2 ga babg efga babg egfe dAFA']  
X:1
L:1/8
M:4/4
K:G
 GA | BcAB GAFG | EFGA B2 ef | gfed Bgfg | (3ege dB A2 GA | BcABGAFG | EFGA B2 ef | gfed BA (3Bcd | 
 e2 E2 E2 :| ga | babg efga | babg egfe | dAFA d^cdf | afdf a2 gf | edef gfga | (3bag af g2 ef | 
 gfed BA (3Bcd | e2 E2 E2 :|  