Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/4
M:4/4
K:F
['B B A2 c f d c/B/']  
X:1
L:1/4
M:4/4
K:F
 A A/G/ | F F/>F/ B B | A2 c f | d c/B/ A G | F2 A A | F F B B | A2 c f | d c/B/ A G | F2 A A | 
 F2 B B | A2 c f | d c/B/ A G | F2 |]  