Compose a musical piece using the designated musical pattern's alphabetic representation and the assigned melodic theme.
X:1
L:1/8
Q:3/8=120
M:9/8
K:A
['agf ecA', 'BGE EGB dcB']  
X:1
L:1/8
Q:3/8=120
M:9/8
K:A
 f | ecA ABA agf | ecA FBA GFE | ecA Ace agf | ecA FBG A2 :: c | BGE EGB dcB | cAc ece aec | 
 BGE EGB dcB | cde dcB A2 :|  