Compose a piece of music following the specified structure and theme.
X:1
L:1/8
Q:3/8=80
M:3/8
K:Bb
['d>dd dcB cBe- e d2 dBA- A', 'def fef g2 f e3- e3- e3', 'cBc BcB d c2 z d/c/B/A/ BAB'  
X:1
L:1/8
Q:3/8=80
M:3/8
K:Bb
|: d>dd | dcB | cBe- | e d2 | dBA- | A G2 | B2 A- | A3 :|[Q:3/8=72] def | fef | g2 f | e3- | e3- | 
 e3 | g>gg | gfe | fde- | e c2 | dBc- | c A2 | B2 A | F3- | F3 | def | fef | g2 f | e3- | e3- | 
 e3 | g>gg | gfe | fde- | e c2 | dBc- | c d2 | f2 e | z e/d/c/B/ |: cBc | BcB | d c2 | z d/c/B/A/ | 
 BAB | ABA | c B2 | z e/d/c/B/ | cBe | gde | g c2- | cf/e/d/c/ | BeG | BAF | EGB |1 ee/d/c/B/ :|2 
 e z2 ||  