Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
M:2/4
K:F
['F2 AF cFAF', 'f2 af gfdf'  
X:1
L:1/8
M:2/4
K:F
 F2 AF | cFAF | cABd cABG | F2 AF | cFAF | cFAc | AGGA :| f2 af | gfdf | cfAf | cfAf | f2 af | 
 gfdf | cAfA | AGGA | f2 af | gfdf | cfAf | cfAf | afge | fdge | fdcA | AGGA ||  