Construct a musical composition using the provided motif and maintain the designated form.
X:1
L:1/4
Q:1/4=120
M:6/4
K:Bb
['(A B) c c2', 'f (g'  
X:1
L:1/4
Q:1/4=120
M:6/4
K:Bb
 D | (D F) B (B c) d | B3 F2 F | (F B) d (d e) f | d3 B2 c | (d e) f (f e) d | g3 G2 A | 
 (B c) d (d c) B | f3 F2 G | (A B) c c2 d | F3 z z A | (A B) c c2 f | f3 z z || c | (c d) c c2 d | 
 e3 e2 f | (g _a) g f2 e | d3 d2 e | (f g) f e2 d | c3 (d e) f | (g f) e (d c) B | A3 F2 f | 
 (g a) b a2 b | b3 z z c | (d e) f (d c) B | (B3 B2) |]  