Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
M:6/8
K:D
['g faf d2 f', 'g faf'  
X:1
L:1/8
M:6/8
K:D
|: B |"D" AFD DFD | AFA d2 B | AFD DFD |"A7" ECA, A,2 B |"D" AFD DFD | AFA d2 B |"G" BdB"A7" cec | 
"D" d2 d d2 :| | g |"D" faf d2 f |"G" gbg"A7" e2 g |"D" faf d2 f |"A7" ecA A2 g |"D" faf d2 f | 
"G" gbg"A7" e2 g |"D" fdf"A7" ece |"D" d2 d d2 g || | g |"D" faf d2 f |"G" gbg"A7" e2 g | 
"D" faf d2 f |"A7" ecA A2 g |"D" faf def |"G" gbg"A7" efg |"D" faf"A7" gec |"D" d2 d d2 |]  