Develop a piece of music by incorporating the provided motif and following the outlined musical structure represented by alphabet characters.
X:1
L:1/8
Q:1/4=100
M:6/8
K:Bb
['B3- Bcd c2 A A3 BAG FGE', 'F3 d3- dBd efg c3 c3- cAc']  
X:1
L:1/8
Q:1/4=100
M:6/8
K:Bb
 B3- Bcd | c2 A A3 | BAG FGE | DFB dcB | BFB dcB | c2 A- ABc | Bcd cBA | BAG F3 :: d3- dBd | 
 efg c3 | c3- cAc | def B3 | G3- GAB | cde Afe | dcB"^tr" c3 | B3 B3 :|  