Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
Q:1/8=232
M:4/4
K:D
['de fd']  
X:1
L:1/8
Q:1/8=232
M:4/4
K:D
|: g | dA AA AF AB | dA AA f2 ef | dB BB BA Bd | AB de fa ef | dA AA AF AB | dA AA f2 ef | 
 dB BB BA Bd | AB de fa ef | de fd ef ge | de fd e2 dB | de fd ef ge | aA AA f2 ef | de fd ef ge | 
 de fd e2 dB | de fd ef ge | fg ag fe d :|  