Compose a piece adhering to the given musical structure and theme.
X:1
L:1/8
M:6/8
K:Bb
['B>cB B>GF G>BG{G} F2 D F>GF dfd']  
X:1
L:1/8
M:6/8
K:Bb
 B>cB B>GF | G>BG{G} F2 D | F>GF dfd |{d} cBc d2 F | Bcd df>d |{d} cBD F2 G | FDF d>cd | 
 BGF G2 B ||  