Develop a piece of music conforming to the stated structure and theme.
X:1
L:1/8
M:6/8
K:Bb
['B>AB{c} B>AB |{c} B>AB def', 'gag gag gfe def fgf fgf fga'  
X:1
L:1/8
M:6/8
K:Bb
|:{c} B>AB{c} B>AB |{c} B>AB def | fdB BAB | GcB AGF |{c} B>AB{c} B>AB |{c} B>AB def | gab fed | 
 cdB AGF :: def fgf | fgf fed | efg gag | gag gfe | def fgf | fgf fga | bag fed | cdB AGF :|  