Craft a musical work adhering to the specified theme and structure.
X:1
L:1/8
Q:1/4=90
M:2/4
K:F
['ff/f/ fa']  
X:1
L:1/8
Q:1/4=90
M:2/4
K:F
|: c | ff/f/ fa | ff/f/ fa | fgfe | G3 A | FF/F/ FA | FF/F/ Ff | A2 G2 | F3 |:  