Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:2/4
K:F
['F F']  
X:1
L:1/8
M:2/4
K:F
 F F F F | d f d c | d f c A | G F G z | f d c2 | C D F2 | G G/ A/ F D | C4 |]  