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
['G2 (BG) dGBG ABcd cBAG Bdgd (3(efg)', 'g2 (dg)']  
X:1
L:1/8
M:4/4
K:C
[M:2/2][K:G] .abc D2"^segno" | G2 (BG) dGBG | ABcd cBAG | Bdgd (3(efg) dB | cBAG FADF | 
 G2 (BG) dGBG | ABcd cBAG | Bdgd (3(efg) dc | BGAF G2 || (!fermata!Bd) |{a} g2 (dg) Bgd"^1)"f | 
 gabg agef | g2 (dg) BgdB | cBAG FADF |{f} g2 (dg) Bgd"^1)"g | gabg agef | 
 gfga gfed (3(efg) (fa) gedB"^segno" |]  