Develop a musical piece that combines the given theme and letter-structured outline.
X:1
L:1/8
M:6/8
K:G
['GED G2', 'edB def g2']  
X:1
L:1/8
M:6/8
K:G
 GED GBA | GED G2 A | GED G2 B | dBG B/c/dB | GED G2 B | def g2 a | bag e/f/ge | dBG A :| 
 dB/c/d edB | def g2 e | d^cd edB | dBG ABc | d^cd edB | def g2 a | bag e/f/ge | dBG A :|  