Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
M:4/4
K:Dmix
['A2 DG FA/F/ DG FAAF GFED FAAB', 'cA GABc dcBA GFEF'  
X:1
L:1/8
M:4/4
K:Dmix
 A2 DG FA/F/ DG | FAAF GFED | FAAB AFDF |1 GFEF GcBc :|2 GFEF G2 AG || FDFA d2 dA | FDFA c2 cA | 
 GABc dcBA | GFEF G2 AG | FDFA d2 dA | FDFA c2 cA | GABc dcBA | GFEF GcBc ||  