Compose a piece of music that follows both the given musical theme and the letter-based structure provided.
X:1
L:1/8
Q:1/4=120
M:4/4
K:D
['(FG) (Ad)(d>c) d2 cd (ef)gg (f2 d>e)', '(^FG) (Ad)(d>c) d2 cd (e!fermata!a)(ge) d2 de', 'D2 d>c B2 (BG) A2 (de) (fd)(c{dc}A)', '(dc) B2 (BG) .A2 (de) (fd)(c{dc}A) G2']  
X:1
L:1/8
Q:1/4=120
M:4/4
K:D
"^Slow" (FG) | (Ad)(d>c) d2 cd | (ef)gg (f2 d>e) | (fd) (c/A/G) A2 (cd) | e2{=fe} d2 d2 (^FG) || 
 (Ad)(d>c) d2 cd | (e!fermata!a)(ge) d2 de | (fd)(c{dc}A) (GB{cB}A>).G | F2 D2 D2 |] | d>c | 
 B2 (BG) A2 (de) | (fd)(c{dc}A) G2 (FG) | (AB{d}c).B (Ad)(ce) | d2 d2 d2 (dc) || B2 (BG) .A2 (de) | 
 (fd)(c{dc}A) G2 (FG) | (AB{d}c).B (A{Bc}BG>).A | F2 D2 D2 |]  