Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
M:6/8
K:Gdor
['G2 A', 'bag f3']  
X:1
L:1/8
M:6/8
K:Gdor
 DGG G2 A | B2 c AFD | F3 AGF | (3DEF D CA,G, | DGG G2 A | B2 c Ace | f2 d cAF |1 AGF G2 F :|2 
 AGF G2 A |: dgg ^fgg | dga bag | f3 fef | agf ecA | dgg ^fgg | dga bag | f3 agf |1 dcA G2 A :|2 
 dcA G2 F ||  