Develop a musical composition based on the provided pattern of letters and incorporating the given motif within it.
X:1
L:1/8
M:2/2
K:G
['|[M:2/2] d2']  
X:1
L:1/8
M:2/2
K:G
S GB | d2 d>e dBAG | cBce g g2 (3g/f/e/ | d2 d2 edBG |[M:3/4] [DA]4 GB |[M:2/2] d2 de dBAG | 
[M:5/4] cBce g4 (3(gfe) |[M:2/2] d2 Bd dcAF |[M:3/4] G4 || G2 |[M:2/2] .[Ec]2 ([Ec]>d) c2 dc | 
 [DB]2 [DB]c (B/c/A) GB | d2 dd edBG ||[M:3/4] [DA]4 GB |[M:2/2] d2 de dBAG | 
[M:5/4] cBce g4 (3(gfe) |[M:2/2] d2 Bd dcAF |[M:3/4] G4S ||  