Compose a musical piece using the designated musical pattern's alphabetic representation and the assigned melodic theme.
X:1
L:1/8
M:4/4
K:A
['AecB cBAc B2 Bc BAFA', 'a2 ga fece f2 ae cABc B2']  
X:1
L:1/8
M:4/4
K:A
|: AecB cBAc | B2 Bc BAFA | d3 B cBAF | EGAB cB B2 | AecB cBAc | B2 Bc BAFA | d2 dB cBAF | 
 EGAB cA A2 :: a2 ga fece | f2 ae cABc | B2 Bc fBaB | e2 ef gebg | a2 ga fece | f2 ae cABc | 
 B2 Bc fBaB | e2 fe cA A2 :|  