Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
M:4/4
K:D
['FG AFAd fedc B^ABe gfed cAce ba^ga', 'D2 fg a^gba fdAd gfag ecAc fdge']  
X:1
L:1/8
M:4/4
K:D
|: FG | AFAd fedc | B^ABe gfed | cAce ba^ga | bafd A2 FG | A2 Fd f2 dc | B2 Ge g2 ag | fafd Bgec | 
 dAFA D2 :: fg | a^gba fdAd | gfag ecAc | fdge afbg | ecdB A2 fg | a2 fd AdFd | g2 ec AcEc | 
 fdAF Egec | d2 A2 D2 :|  