Create a musical composition using the given alphabetical pattern and melodic theme.
X:1
L:1/8
Q:1/2=90
M:4/4
K:Emin
['c2 B2 A2 a2', 'A2 cdec cdec dBGd BGdB cdeg cdea', 'A2 cdef gag>e gag>e dBGB cdef gage']  
X:1
L:1/8
Q:1/2=90
M:4/4
K:Emin
 c2 B2 A2 a2 | efge dBGB | c2 B2 A2 a2 | gefd e2 A2 :: cdec cdec | dBGd BGdB | cdeg cdea | 
 gefd e2 A2 :: cdef gag>e | gag>e dBGB | cdef gage | ea^gb a2 A2 :|  