Craft a composition that integrates the assigned alphabet-related musical pattern and the provided melodic theme.
X:1
L:1/16
M:3/4
K:C
['', 'EGce G2G2 G2F2', 'EGce G4 (G2F2)']  
X:1
L:1/16
M:3/4
K:C
 |: cBcd c2G2 E2C2 | cBcd c2g2 e2c2 | g2g2 a2f2 g4 | e2e2 f2d2 e4 | g2eg d2fd e2dc | 
 B2dB G4 (G2F2) | EGce G2G2 G2F2 | EGce G2G2 G2F2 | EGcG Gcec Acfa | gfed c4 C4 :: d2d2 d2c2 B2A2 | 
 B2(dB) G4 F4 | E2g2 g2f2 e2d2 | efgB c4 C4 | F2(ag) a2F2 E2g2 | D2(fe) f2D2 C2E2 | 
 f2(ag) f2e2 d2c2 | B2dB G4 G2F2 | EGce G4 (G2F2) | EGce G4 (G2F2) | EGcG Gcec Acfa | gfed c4 C4 :|  