Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:6/8
K:D
['f2 d']  
X:1
L:1/8
M:6/8
K:D
|:"A7" A |"D" ABA"D" f2 d |"Em" efa"D/F#" fed |"G" ABA"^/B" f2 d |"Em" edA"A" B2 d |"D" ABA f2 d | 
"A/C#" efa"Bm" fed |"G" efa"D/F#" f2 e |"Em" dBA"A" A2 :: f |"D" aAa"^/C#" fed |"Bm" aAa"^/A" fed | 
"G" aAa"D/F#" fed |"E" f2 e"A" e2 f |"D" aAa"Em" fed |"D/F#" eAA"G" f2 d |"Em" efa"A" f2 e | 
"G" dBA"A" A2 :|  