Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
Q:1/8=160
M:6/8
K:G
['B2 A G2 E D3 FED BAB', 'Bdd def gfg dBG Bee dBA'  
X:1
L:1/8
Q:1/8=160
M:6/8
K:G
 A | B2 A G2 E | D3 FED | BAB dBG | FAA AGA | B2 A G2 E | D3 FED | BAB dBG | GAG G2 :| A | 
 Bdd def | gfg dBG | Bee dBA | FAA AGA | Bdd def | gfg dBG | Bee dBA | BGG G2 :|  