Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
M:2/2
K:G
['GFGA GBdB AGAB cdef gfgd ecAG |1', 'a2 g2 gd ecAG FGAB A4 d2']  
X:1
L:1/8
M:2/2
K:G
|: GFGA GBdB | AGAB cdef | gfgd ecAG |1 FGEF D4 :|2 G2 G2 G4 :: d2 dc B2 g2 | e2 ed c2 a2 | 
 g2 gd ecAG | FGAB A4 | d2 dc Bd g2 | e2 ed ce a2 | gfgd ecAF | G2 G2 G4 :|  