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:C
['g- g2', 'd2 c2']  
X:1
L:1/8
M:2/2
K:C
 e3 g- g2 e2- | edcA G4 | AGAc B2 G2 | cBAG E G3 | !slide![ee]3 g- g2 ([ee]2 | e)dcA G3 B | 
 AGAc BAGB | [Ec]2 [Ec]d cAGF || E2 G2 c2 cB | A2 F2 d2 c2 | B2 G2 e2 ec | d2 c2 cdcG | 
 E2 G2 c2 cB | A2 F2 d2 c2 | B2 G2 e3 c | d2 c6 ||  