Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/4
M:4/4
K:Ab
['A A']  
X:1
L:1/4
M:4/4
K:Ab
 C C | F F =E C/C/ | A A G (c/B/) | A F (G/F/) E | F3 C/C/ | F F/F/ =E C/C/ | A A G (c/B/) | 
 A F G E | F3 (A/B/) | c c c B/A/ | B B B G/G/ | A A G F | (G2 c) C/C/ | F F/F/ =E C/C/ | 
 A A G c/B/ | A F G G | F3 A/B/ | c3/2 c/ c A | B3/2 B/ B c/B/ | A A A F | (G2 c) C | F F =E C/C/ | 
 A A G c/B/ | A F (G/F/) E | F3 ||  