Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
Q:1/8=180
M:4/4
K:D
['d2 BA', 'ad d2']  
X:1
L:1/8
Q:1/8=180
M:4/4
K:D
 FABc d2 BA | d2 BA FE E2 | FABc d2 BA |1 f3 e dBBA :|2 f3 e dB B2 || ad d2 adbd | adde fe e2 | 
 ad d2 a3 f | egfe dBAB | ad d2 adbd | adde fe e2 | a3 a b2 af | egfe dBBA ||  