Compose a piece of music using the provided motif and follow the designated alphabet character structure.
X:1
L:1/8
Q:1/4=100
M:2/4
K:F
['B(3B/c/B/ Gd cca>f', 'z e(3e/f/e/ gc c=B B2 f(3f/g/f/ a=B']  
X:1
L:1/8
Q:1/4=100
M:2/4
K:F
 B(3B/c/B/ Gd | cca>f | eeb>e | f/e/f/g/ af | B(3B/c/B/ Gd | cca>f | ee[d'd]>e | fff z :: 
 e(3e/f/e/ gc | c=B B2 | f(3f/g/f/ a=B | dc c2 | A(3A/B/A/ cA | a g2 e | [gd] f2 d | 
 d c2"^D.C." c |]  