Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
M:3/4
K:D
['AF E>F']  
X:1
L:1/8
M:3/4
K:D
 dB | AF E>F A/F/ E/F/ | DD D2 DE | FF e2 cd | BA B2 DE | FF d2 cd | BA B>c d>B | AF E>F AF E/F/ | 
 DD D2 ||  