Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/8
M:3/4
K:D
['cA gc'  
X:1
L:1/8
M:3/4
K:D
"D" BA FA fd |"A7" cA gc A2 | BA GA gc |"D" dA fd A2 | BA FA fd |"A7" cA gc A2 | BA Ac gc | 
"D" d4 z2 ::"A7" Ac cA eA |"D" Ad dA fd |"A7" Ac cA gc |"D" dA fd A2 |"A7" Ac cA eA |"D" Ad dA fA | 
"A7" Ac cA gc |"D" d4 z2 :|  