Compose a musical piece utilizing the given motif as the foundation while maintaining the required musical form.
X:1
L:1/4
Q:3/4=100
M:6/4
K:Bb
['d B2 F B2 c d3- d2', 'f c2'  
X:1
L:1/4
Q:3/4=100
M:6/4
K:Bb
 d | B2 F B2 c | d3- d2 e | (f d) B (d c) B | c A2- A2 f | (d B) B e2 f | g3- g2 g | 
 _a g f (c d) =e | f3- f2 :: f | c2 f c2 d | e3- e2 f | (g G) G (c d) e | A3- A2 c | d2 B e2 c | 
 f2 d g a f | b3- b2 a | g a b f2 e | e3 (g2 f) | f3 d e f | c d e c2 B | B b2- b2 :|  