Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/8
M:4/4
K:D
['A2 A2', 'd6 (fg) .a2 .g2 fgaf .g2 .c2']  
X:1
L:1/8
M:4/4
K:D
 DE | F2 A2 A2 Bc | d2 A2 A2 f2 | (e2 d2) fedc | d6 (DE) | F2 A2 A2 (Bc) | d2 A2 A2 f2 | 
 (ge)(cA) f2 e2 | d6 || | (fg) | .a2 .g2 fgaf | .g2 .c2 .c2 (de) | (.=f2 .d2) (.d.e.^f.g) | 
 a2 A2 A2 (FG) | (A^GAB) (A=GFG) | (A^GAB) A2 f2 | e2 d2 fedc | d6 ||  