Develop a musical composition by utilizing the given alphabetic notation and supplied motif.
X:1
L:1/8
M:2/2
K:G
['GDGB GDGB', 'G G gabg e2 e2 fgaf d2']  
X:1
L:1/8
M:2/2
K:G
 D | GDGB GDGB | dedB A2 A2 | GDGB GDGB | dBAB G2 G :: G | gabg e2 e2 | fgaf d2 d2 | gabg dedB | 
 AGAB G2 G :|  