Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:2/2
K:Bb
['B>FD>F B>cd>B e>dc>B (A<c) c2 B>FD>F B>cd>e', 'd f>gf>e d>fb>a g>fe>d (3cdB (3Adc B>FD>F']  
X:1
L:1/8
M:2/2
K:Bb
|: B>FD>F B>cd>B | e>dc>B (A<c) c2 | B>FD>F B>cd>e | f<d c>d B3 d :: f>gf>e d>fb>a | 
 g>fe>d (3cdB (3Adc | B>FD>F B>cd>e | f<d c>d B3 d :|  