Compose a musical piece in accordance with the outlined theme and structure.
X:1
L:1/8
M:6/8
K:C
['def fgf', 'dBG GAG'  
X:1
L:1/8
M:6/8
K:C
 def fgf | def fgf | ece dBG | c2 c e2 c :: dBG GAG | dBG GAG | efg dBG | c2 c c3 :|  