Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/8
M:2/2
K:Emin
['', 'GEEF G2', 'fgag gfe^d e2 :|2 ggbg f2 af']  
X:1
L:1/8
M:2/2
K:Emin
 BAS || GEEF G2 (EF) | G2 (FG) AcBA |1 GEEF G2 (ef) | gfed B2 :|2 GFEF GABa | gef^d e2 |]: ef | 
 g2 bg f2 af | e2 fe BBef |1 gabg fgag | gfe^d e2 :|2 ggbg f2 af | gfe^d e=dBSA |]  