Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:4/4
K:Bmix
['f>e f>a', 'd2 B>A B2', 'e>d B>e d>B e>d', 'e>d B>e d>B e>d'  
X:1
L:1/8
M:4/4
K:Bmix
 (3Bde f>e f>a f>e | d2 e2 f>e d>B | z3/2 d/ e>d e>f e>d | d2 e>d e>d B>A | (3Bde f>e f>a f>e | 
 d2 e2 f>e d>B | z3/2 d/ e>d e>f e>d |1 d2 B>A B2 z2 :|2 d2 B>A B2 a>f |: b2 f>e f>a z3/2 e/ | 
 f>e f>a z3/2 e/ f>a | b2 f>e f>a f>e |1 d2 B>A B2 a>f :|2 d2 B>A B2 z3/2 e/ || f>B B>e B>B d>B | 
 B>=d B>B e>=f e>d | A2 G>A F>A =F>A | E>A c>=d ^d>e =d>e | f>B B>e B>B d>B | B>=d B>B e>=f e>d | 
 A2 =F>G A>B c>d | e>f e>d B2 z3/2 d/ |: e>d B>e d>B e>d | B>e d>B e>d B>=c | ^c>A d>c A>d c>A | 
 d>c A>d c>A (3c=d^d | e>d B>e d>B e>d | B>e d>B e>d B>=c | ^c>A d>c A>d c>A |1 
 e2 B>A B2 z3/2 d/ :|2 e2 B>A B4 ||  