Craft a musical work based on the specified structure and given theme.
X:1
L:1/16
Q:1/4=120
M:2/4
K:D
['FFAA GGBB A2f2 [fd][fd][fd][fd] A2[ec]2 [ec][ec][ec][ec]', '[dF]4 d2B2 BcdB A2[FA,]2 [FA,]4 G2[EC]2 [EC][EC][EC][EC]'  
X:1
L:1/16
Q:1/4=120
M:2/4
K:D
|:"^Fast" FFAA GGBB | A2f2 [fd][fd][fd][fd] | A2[ec]2 [ec][ec][ec][ec] | A2[dF]2 [dF]4 :: 
 d2B2 BcdB | A2[FA,]2 [FA,]4 | G2[EC]2 [EC][EC][EC][EC] |1 F2[DD]2 [DD]4 :|33 D2FA d2f2 | [d'f]8 |]  