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:Eb
['G2 [B,F]2 [B,F]2', 'G2 [DF]2 [DF]2']  
X:1
L:1/8
M:4/4
K:Eb
 (B,C) | E3 F G2 c2 | BGBc BGFE |{EF} G2 [B,F]2 [B,F]2 EF |{A} G2 [B,F]2 [B,F]2 EC | B,CEF G3 c | 
 B<GFE TF2 G=B | c2 C2 C2 B,C | E2 C2 C2 :: (Bc) | e3 f efgf | eBce BG{G}FE | G2 [DF]2 [DF]2 EF | 
{A} G2 [DF]2 [DF]2 ef | gefg eBce | (BG)FE F2 G=B | c2 C2 C2 B,C | E2 C2 C2 :|  