Develop a musical composition by utilizing the given alphabetic notation and supplied motif.
X:1
L:1/8
Q:1/4=140
M:4/4
K:G
['BcdB c2', 'B2 G2']  
X:1
L:1/8
Q:1/4=140
M:4/4
K:G
 G | BcdB c2 c2 | BcdB A4 | BcdB c2 Bc | d2 D2 G3 :: A | B2 G2 c4 | B2 G2 A4 | B2 d2 c2 Bc | 
 d2 D2 G3 :|  