Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
Q:1/4=120
M:3/4
K:G
['(e>d) (d B3) G>A B2{d} (c>B){B}', '(d>B) g2']  
X:1
L:1/8
Q:1/4=120
M:3/4
K:G
"^(Andante)" (G3/2{AGFG}A/) | B2 g2{f} (e>d) | (d B3) G>A | B2{d} (c>B){B} (A>G) | G4 (G>A) | 
 B2 g2 (e>d) | (d B3) G>A | B2{d} (c>B){B} A>G | G2 z :: (d>B) | g2 (g>f){f} (e>d) | d2 B2 (d>B) | 
 g2 (gf) (e>^d) | e2({fe^de)(fa)} !fermata!g2 (G>A) | B2 g2 (f>e) | (d B3)"^~" G>A | 
 B2{d} (c>B)"^tr" A{GA}G | G4 :|  