Develop a musical composition incorporating the given motif while adhering to the outlined alphabetical form.
X:1
L:1/8
M:2/4
K:G
['d g>agb g>agb g2 dB A3 B', 'G3 G A>BAG A>BAG BdecB A3 d']  
X:1
L:1/8
M:2/4
K:G
 d | g>agb | g>agb | g2 dB | A3 B | G>A Bc | d2 g2 | dBAB | G3 :: G | A>BAG | A>BAG | BdecB | 
 A3 d | g>agb | g>agb | gBAB | G3 :|  