Create a composition using the letter notation of the specified musical motif and the provided melodic theme.
X:1
L:1/8
Q:3/8=120
M:9/8
K:Bb
['F D/E/FD', 'B,2 F BdB edg fdB A2 F']  
X:1
L:1/8
Q:3/8=120
M:9/8
K:Bb
"_Allegretto" F | D/E/FD BFE D2 B, | D/E/FD ECC C2 F | D/E/FD Bcd D2 B, | D/E/FC DB,B, B,2 :| F | 
 BdB edg fdB | A2 F A/B/cc c2 d | Bcd fga bag | dbd c2 B B2 :|  