Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/4
Q:1/2=120
M:4/4
K:D
['D F A d A2', 'F) (E']  
X:1
L:1/4
Q:1/2=120
M:4/4
K:D
 D F A d | A2 F2 | G3/2 A/ (B A) (G F) | E4 | D F A d | A2 f2 | (e f) (e c) (B c) (B A) | A4 :: 
 A c e a | e2 c2 | d3/2 e/ (f e) (d c) | B3 A | A d A F | A2 d2 | (A B) (A F) (E F) (E D) | D4 :|  