Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/4
Q:1/2=100
M:2/2
K:D
['A F A d e f2 e', 'A (B/c/)(d/B/)']  
X:1
L:1/4
Q:1/2=100
M:2/2
K:D
 A | F A d e | f2 e d | A B A G/F/ | E3 A | F A d e | f2 e d | A B A F | D3 || A | 
 F A (B/c/)(d/B/) | G B (B/c/)(d/B/) | F A (B/c/)(d/B/) | e E E A | F A (B/c/)(d/B/) | 
 G B (B/c/)(d/B/) | F A (B/c/)(d/B/) | d D D A | F A (B/c/)(d/B/) | G B (B/c/)(d/B/) | 
 G A (B/c/)(d/B/) | e E E f/g/ | a (g/f/) g (f/e/) | f (e/d/ e) (d/c/) | d (c/B/) A/G/F/E/ | D3 |]  