Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:2/4
K:A
['A>B ce', 'ce A>B ce']  
X:1
L:1/8
M:2/4
K:A
|: E | A>B ce | ae fe | A>B ce | f/e/c ef | A>B ce | ae fe | Ac BA/B/ | cA A :| e | ce A>B | 
 ce fe | ce A>B | ce B2 | ce A>B | ce fe | Ac BA/B/ | cA Ae | ce Ac | eA ce | Ac ec | dB e>d | 
 ce A>B | ce fe | Ac BA/B/ | cA A ||  