Craft a musical composition that incorporates the supplied alphabet sequence and motif.
X:1
L:1/8
M:2/2
K:G
['g2 b>g d2 g>d (B>c)d>B G2', 'B2 (B>c) dBdB g2 (gf) ecec a2']  
X:1
L:1/8
M:2/2
K:G
 (3(udef) | g2 b>g d2 g>d | (B>c)d>B G2 B>G | [EC]2 A>G (F>A)d>c | c2 B2 [BG]2 (3(def) | 
 g2 b>g d2 g>d | (B>c)d>B G2 A>B | cedc BGAF | G2 B2 B2 :: (B>c) | dBdB g2 (gf) | ecec a2 (ag) | 
 (f>e)f>d (g>f)g>b | agfe de.^e.f | g2 b>g d2 g>d | (B>c)d>B G2 A>B | cedc BGAF | G2 B2 G2 :|  