Develop a musical composition incorporating the given motif while adhering to the outlined alphabetical form.
X:1
L:1/8
Q:3/8=100
M:6/8
K:G
['d2 d def gfe dBG', 'Bdd Bdd GAB']  
X:1
L:1/8
Q:3/8=100
M:6/8
K:G
 d2 d def | gfe dBG | BBB ccc | efg dBG | d2 d def | gfe dBG | efg BdB | G2 G G3 :| Bdd Bdd | 
 GAB GAB | ccc BBB | FGA FGA | Bdd Bdd | GAB Bcd | efg BdB | G2 G G3 :|  