Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
M:2/2
K:A
['A2 Af eAcA', 'aece (ae)cA']  
X:1
L:1/8
M:2/2
K:A
 B | A2 Af eAcA | BF F/F/F AEEF | A2 Af eAcA | BABc A/A/A A :| g | aece (ae)cA | BF F/F/F (AE)Eg | 
 aece (ae)cA | (BA)Bc A/A/A (Ag) | aece (ae)cA | BF F/F/F (AE)EF | ABcd eaec | BABc A/A/A A ||  