Craft a musical composition that incorporates the supplied alphabet sequence and motif.
X:1
L:1/8
M:3/2
K:G
['GABc (3ded B2', 'GABc (3ded B2', 'g4 defg (3gag d2']  
X:1
L:1/8
M:3/2
K:G
 B4 GABc (3ded B2 | GABc (3ded B2 d2{f} g2 | B4 GABc (3ded B2 | (A2 .e2) .e2 (A2 c2 e2) :: 
 GABc (3ded B2 .g2 B2 | GABc (3ded B2 d2{f} g2 | GABc (3ded B2 .g2 B2 | (A2 .e2) .e2 (A2 c2 e2) :: 
{f} g4 defg (3gag d2 | (B2 .d2) d2 G2 B2 d2 |{f} g4 defg (3gag d2 | (A2 .e2) .e2 (A2 c2 e2) :|  