Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/8
Q:1/4=160
M:4/4
K:G
['B2 A2']  
X:1
L:1/8
Q:1/4=160
M:4/4
K:G
 D2 |"G" .G2 D2 GABc | d4 B4 |"D" A2 .d2 A2 .d2 |"G" BcBA G2 D2 | .G2 D2 GABc | d4"C" c4 | 
"G" BAGA"D" B2 A2 |"G" G6 :: A2 |"G" B3 B B2 A2 |"Em" G4 A2 B2 |"C" c3 c c2 B/c/B | 
"D" A2 F2 E2 D2 |"G" B3 A GABc | d4"C" c4 |"G" BAGA"D" B2 A2 |"G" G6 :|  