Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/16
M:2/4
K:G
['(BcBA) GABc d4']  
X:1
L:1/16
M:2/4
K:G
 e4 e4 | e2dc B2c2 | B4 z4 | B4 e4 | ^d2de f2f2 | G8 | ^d2ef g2Bc | d8 | G4 e4 | .d2b2 Te4 | 
 .d2b2 z4 | B2d2 c2f2 | g2d2 b4 | B2d2 c2f2 | .g2.d2 b4 | g6 fe | (dedc) (BcBA) | GABc d4 | e6 f2 | 
 g6 fe |({e} dedc) (BcBA) | GABc d4 | Te4 d2b2 | Te4 .d2b2 | B8 | e2E2 z4 |]  