Compose a musical work utilizing the given alphabet-based form and the provided motif.
X:1
L:1/8
Q:1/4=120
M:4/4
K:Bb
['B B', 'B G']  
X:1
L:1/8
Q:1/4=120
M:4/4
K:Bb
 F2 | B B B B B A G F | B B B B BA G F | B B B B B d f d | c>A F>G F2 || d2 | e c d e f d c B | 
 B G F E ED D F | G A B G A c A F | G2 B>c B2 |]  