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:C
['', 'fAA eAA', 'Md2 B']  
X:1
L:1/8
M:4/4
K:C
 .abc ||[M:6/8][K:G] (3:2:1Mg | fAA eAA | Md2 B A2 g | fAA eAA | Md2 B G2 g | fAA eAA | fAA efg | 
 faf gfe | Md2 B G2 :: (B/c/) | ded BAB | Md2 B A2 B | ded BAB | Md2 B G2 B | ded BAB | 
 Md2 B A2 g | faf gfe | Md2 B G2 :|  