Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
Q:1/4=150
M:4/4
K:Gmin
['G2 z']  
X:1
L:1/8
Q:1/4=150
M:4/4
K:Gmin
|:"Gm" z G2 G DD G2 |"D7" z A2 c"Gm" BA G2 | z d2 d"Cm" e>d ce |"D7" d>c de d4 :| 
"Gm" z B2 c d2 d2 |"D7" d c2 d"Gm" c2 B2 |"D7" AB cd c B2 A |"Gm" B4 z4 |"Gm" G G2 A B2 B2 | 
"D7" B A2 B"Gm" A2 G2 |"D7" ^FG AB A G2 F |"Gm" G4 z4 |]  