Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/8
M:3/4
K:F
['B2 d2 c3 dcB', 'c2 A2 f2 (gf)(ef) G2 e3', 'c2 (cB)(GA) B2 (AF)(Ac) f2', '(ge)(cb)(ag) (fg)(fe)(dc)', 'f4 g2 a2 d2 b2 agefga f2']  
X:1
L:1/8
M:3/4
K:F
 fg | a4 f2 | (ef)(gf)(ed) | c3 dcA | F2 B2 d2 | c3 dcB | G2 B2 d2 | c3 dcB | A2 c2 (fg) | a4 f2 | 
 (ef)(gf)(ed) | c3 dcA | F2 B2 d2 | c3 dcB | G3 BAG | F2 ffff | f4 :: (AB) | c2 A2 f2 | 
 (gf)(ef) G2 | e3 ceg | (fe)(fg)(af) | c2 A2 f2 | (gf)(ef) G2 | e3 ceg | f4 :: c2 | (cB)(GA) B2 | 
 (AF)(Ac) f2 | ecegag | fefa c2 | (cB)(GA) B2 | (AF)(Ac) f2 | ecegag | f4 :: g2 | (ge)(cb)(ag) | 
 (fg)(fe)(dc) | (=Bc)(dc)(BG) | F2 Ac f2 | (ge)(cb)(ag) | (fg)(fe)(dc) | (=Bc)(dc)(BG) | F4 :: c2 | 
 f4 g2 | a2 d2 b2 | agefga | f2 A2 c2 | cB G2 B2 | AG F2 F2 | EF G2 C2 | f4 g2 | a2 d2 b2 | 
 agefga | f2 A2 c2 | cB G2 B2 | AG F2 F2 | EF G2 C2 | F4 :|  