Craft a musical work adhering to the specified theme and structure.
X:1
L:1/8
Q:1/4=140
M:2/4
K:F
['A/B/ c2 AF', 'c3 e/f/ gabg fedc Bdgf fedc dBcA'  
X:1
L:1/8
Q:1/4=140
M:2/4
K:F
 A/B/ | c2 AF | d2 df | cBAG | F2 z A/B/ | c2 AF | f2 fa | gfed | c3 :: e/f/ | gabg | fedc | Bdgf | 
 fedc | dBcA | Begb | afge | f3 :|  