Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
M:2/4
K:Ab
['A A']  
X:1
L:1/8
M:2/4
K:Ab
 E | A2 c3/2 B/ | A2 (E>D) | C D E F | E3 e/>d/ | c3/2 B/ c d | c B z E | A A A A | F3 F/ F/ | 
 d B B F | (AG) A B | c2 A c | (BAGF | ED(C)B, | A,2) E E | A2 F F | B2 G2 | A A z2 |]  