Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:4/4
K:C
['f c2 Gc ECG_B AFGE D(dd)f ecBd', 'ecgc afge']  
X:1
L:1/8
M:4/4
K:C
 f | c2 Gc ECG_B | AFGE D(dd)f | ecBd cGEC | FAGE Gcc :| f | ecgc afge | d_BfB dfBf | ecgc afge | 
 (B/c/d) Gf eccf | ecgc afge | d_BfB dfBg | ecBd cGEc | AFDf ecc ||  