Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
M:2/2
K:D
['dABG FD D2', 'fe dBAG FD'  
X:1
L:1/8
M:2/2
K:D
|: FDFA B2 Bc | dBcA BEEG |1 FDFA BABc | dABG FD D2 :|2 (3FED EF GABc | dABG FD D2 |]: d2 fd Adfd | 
 Adfd eB B2 |1 d2 fd Adfd | (3fga eg fd d2 :|2 g2 fd (3efg fe | dBAG FD D2 |]  