Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:4/4
K:Gmin
['dded B3 B ccdc A3 A', '(d g>)d ^cd fed=c B2 G3 (DG)A', 'G^FG A>A Bc d>d =e^f g>a gf']  
X:1
L:1/8
M:4/4
K:Gmin
 dded B3 B | ccdc A3 A | BBcd cBAG | A3 ^F D3 D | dded B3 B | ccdc A3 A | B A2 G ^c B2 A | 
 d4 d3 (d || g>)d ^cd fed=c | B2 G3 (DG)A | B(c/B/ A)B c>B AG | A3 ^F D3 (d | g>)d ^cd fed=c | 
 B2 G3 (DG)A | BA z G AG z ^F | G4 z G^FG || A>A Bc d>d =e^f | g>a gf ed c2 | (f>g) fe dcBc | 
 d4 d3 (d | g>)d ^cd fed=c | B2 G3 (DG)A | B(c/B/ A)G A(B/A/ G)^F | G4 [G,G]4 |]  