Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
Q:1/4=80
M:4/4
K:Bmin
['FA B>c']  
X:1
L:1/8
Q:1/4=80
M:4/4
K:Bmin
 FA B>c decA | FA B>c BA F2 | FA B>c decd | e2 f>b bA f2 | de f>b ba f2 | c/b/c df f/e/d c2 | 
 FA B>c decA | FA B2 f/e/d/c B2 |]  