Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:2/2
K:Bb
['d B2 (D/E/F) (E/F/G) (F/G/A) (B/c/d/e/) fB', '(d/c/B) df gBfB'  
X:1
L:1/8
M:2/2
K:Bb
 d | B2 (D/E/F) (E/F/G) (F/G/A) | (B/c/d/e/) fB A(cc>)d | BfAf GBFB | EGFA BB,B, :| f | 
 (d/c/B) df gBfB | ecdB Accf | (d/c/B) Af eGFd | GcFA BB,B,f | (d/c/B) df gBfB | 
 (e/d/c) (d/c/B) A(cc>)d | ecGE dBFD | EGFA BB,B, ||  