Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:2/2
K:D
['(3(fgf) df']  
X:1
L:1/8
M:2/2
K:D
 D2 (3(FED) AD (3(FED) | Ec (3(cBc) edcA | D2 (3(FED) Eddc | ABGF EDCE | D2 (3(FED) AD (3(FED) | 
 Ec (3(cBc) edcA | DEFG Addc | ABGE (TED) D2 | (Tfe)(dc) Acdf | edcd ef{a}ge | (Tfe)(dc) dcdf | 
 (ea)ag (ed) d2 | (3(fgf) df (3(fgf) df | (3(efe) ce (3(efe) ce | dfeg fagb | afge (fd) d2 | 
 faag fddf | efgf eccg | faag fddB | cAGE (TED) D2 | faag fddf | efgf ecce | dfeg fagb | 
 afge (fd) d2 | (3(fgf) df (3(fgf) df | (3(efe) ce (3(efe) ce | (3(fgf) df (3(fgf) dB | 
 cAGE (TED) D2 | (3(fgf) (df) dfdf | (3(efe) (ce) cece | dfeg fagb | afge (fd) d2 |]  