Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/8
Q:3/8=120
M:6/8
K:C
['G c2 c d2 d e2 e', 'e/f/ g2 g gag f2 f fgf', 'eaea e>dce dcdB', 'B>cdc BeEd']  
X:1
L:1/8
Q:3/8=120
M:6/8
K:C
 G | c2 c d2 d | e2 e f2 f | g>fe fed | c2 c c2 :: e/f/ | g2 g gag | f2 f fgf | e2 e efe | 
 d2 d d2 e/f/ | g2 g gag | f2 f fgf | efe dcB | c2 c c2 :|[M:2/4][K:A][Q:1/4=120] c/d/ | eaea | 
 e>dce | dcdB | c/B/c/d/ c(c/d/) | eaea | e>dce | dcdB | c3 :: c | B>cdc | BeEd | B>cdc | BeEd | 
 c>ded | c>ded | c/e/c/A/ B/d/B/G/ | A3 :|  