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:G
['GABc dBge dBAc BEED EFGA', 'gfed BEED EFGA']  
X:1
L:1/8
M:2/2
K:G
"G" G2 GF GABc | dBge dBAc |"Em" BEED EFGA |"D" BGAF GFED |"G" DGGF GABc | dBge dBAc | 
"Em" BEED EFGA |"D" BGAF"G" G4 ::"Em" Beed e2 ef | geaf gfed |"D" Bdd^c d2 de | fdaf gfed | 
"Em" Beed e2 ef | geaf gfed | BEED EFGA |"D" BGAF"G" G4 :|  