Develop a musical composition by integrating the alphabetically represented musical pattern and the supplied melodic theme.
X:1
L:1/8
Q:3/4=90
M:6/4
K:Fmin
['E2 G B3 B2', 'e2 e3 f g2 G3 F E2']  
X:1
L:1/8
Q:3/4=90
M:6/4
K:Fmin
 F2 | C2 F2 F2 (F3 G) A2 | G3 F E2 G B3 B2 | c c3 c2 B c3 e2 | c3 B AG F4 (FE) | 
 (C2 F2) F2 F3 G A2 | G2 F2 E2 G B3 B2 | c4 c2 B2 c2 e2 | c3 B (AG) F4 || e2 | e4 e2 e3 f g2 | 
 G3 F E2 G2 B4 | c2 f2 f2 f3 e f2 | (g3 f)(ed) c4 e2 | (e3 f) e2 e3 f g2 | G3 F E2 G B3 B2 | 
 c2 c2 (BG) B3 c e2 | c3 B (AG) F4 |]  