Develop a musical composition utilizing the presented motif and adhering to the required structure.
X:1
L:1/8
M:6/8
K:G
['d2 B BAB', 'd2 e g2 a b2 b bag'  
X:1
L:1/8
M:6/8
K:G
 gfg age | d2 B BAB | d2 B BAB | dBG G2 d | gfg age | d2 B BAB | dBG GAB | A3 G3 :: d2 e g2 a | 
 b2 b bag | a2 a age | gfg age | d2 e g2 a | b2 b bag | age dgb | a3 g3 :|  