Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:6/8
K:A
['agf fcc A2 G FGA ABc cfe']  
X:1
L:1/8
M:6/8
K:A
 f |"A" eAA cAA | eAA A2 f | edc cBA |"E" GBB Bcd |"A" eAA cAA | eAA"D" fed |"A" cde"E" efg | 
"A" aAA A2 :: a |"F#m" agf fcc |"Bm" dcB"F#m" A2 G | FGA ABc |"E" cfe e>fg |"F#m" agf fcc | 
"Bm" dcB"F#m" A2 G | FGA ABc |"E7" cfe e2 :|  