Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
Q:1/8=70
M:2/4
K:D
['D DF AA AA Ad ||[M:3/4][Q:1/8=140] dd', 'G2 BB A3 D ||[M:2/4][Q:1/8=70] DF AA', 'Ad [M:3/4][Q:1/8=140] dd B2 G2 BB', 'AF D2 E2']  
X:1
L:1/8
Q:1/8=70
M:2/4
K:D
 D | DF AA | AA Ad ||[M:3/4][Q:1/8=140] dd B2 G2 | BB A3 D ||[M:2/4][Q:1/8=70] DF AA | AA Ad || 
[M:3/4][Q:1/8=140] dd B2 G2 | BB A3 A | AF D2 E2 | FG FE DA | AF D2 E2 ||[M:2/4][Q:1/8=70] FG FE | 
 D2 z2 ||  