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:G
['', 'dged B2 Ac BGEG FA A2 BG', 'A/B/c dggf']  
X:1
L:1/8
M:4/4
K:G
|: A/B/c |: dged B2 Ac | BGEG FA A2 | BG B/c/d cdeg | fgaf gfeB | dged B2 Ac | BGEG FA A2 | 
 BG B/c/d cdeg |1 fgaf g3 B :|2 fgaf g3 f || g3 a gfeB | dged BG A/B/c | dggf gfeB | dega bggf | 
 g2 af gfeB | dged BG A/B/c | dggf gfeg |1 fgaf g3 f :|2 fgaf g2 ||  