Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
M:3/4
K:Gmin
['d3 (G F)A B2 GABc d3 (c', 'G3 BAc Bc d4']  
X:1
L:1/8
M:3/4
K:Gmin
 d3 (G F)A | B2 GABc | d3 (c B)A | (c/B/A/B/) G4 | c3 (d/e/) (d/c/B/A/) | G2 F2 G2 | DddccB | 
 B2 A2 z2 | d3 (G F)A | B2 GABc | d3 (c B)A | (c/B/A/B/) G4 | c4 (cde) | 
 (d/c/B/A/) (B/c/d/e/) (f/g/a/b/) | (gf/e/) d2 c2 | B4 :: d3 ABd | dc c3 A | BddccB | B2 A4 | 
 D3 CB,D | DC C3 A, | B,DDCCB, | B,2 A,4 | G3 BAc | Bc d4 | G3 BAc | Bc d4 | edcBAG | G2 F2 G2 | 
 DddccB | B4 A2 | [DAf]f f4 | [DBg]g g4 | ecBAGF | FG G4 :|  