Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
M:6/8
K:G
['GBd FAd', 'g2 fga aba agf ed^c (d/f/a)f (d/f/a)f', 'a2 b2 a2 a4 b4 a2 g2', 'F2 EF G2 G4 B4 A2 D2']  
X:1
L:1/8
M:6/8
K:G
 g/f/ | g>fe dcB | ABc BAG | GBd FAd | GBd FAd | gdg gdg | gdg fe/f/d | g>fe d>cB | Agf g2 :: 
 fga aba | agf ed^c | (d/f/a)f (d/f/a)f | Ad^c dgf | (g/=c/B)c (g/c/B)c | (g/c/B)c f>ed | 
 g>fe d>cB | Agf g2 ::[M:2/2][K:Dmin] defg a2 a2 | b2 a2 a4 | b4 a2 g2 | agfe d4 | defg f2 A2 | 
 ABcd c2 F2 | FG A2 AB c2 | A2 G2 F4 :: FGAB c2 F2 | EF G2 G4 | B4 A2 D2 | ^CD E2 E4 | 
 AB^cd e2 G2 | F2 de f2 A2 | G2 ba gfed | e2 d^c d4 :|  