Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/4
Q:3/4=60
M:3/4
K:F
['A/B/ c A G A F d', 'f f']  
X:1
L:1/4
Q:3/4=60
M:3/4
K:F
 A/B/ c A | G A F | d c f | d2 c :: f3/2 g/a/g/ | f f c | f f g | a2 g | a a g | f3/2 g/ a | c A2 | 
 G2 F :|  