Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
M:4/4
K:C
['(f/g/) afd ecA d2 A A2', 'D2 (F/G/) AFA BGB AFA d2 A']  
X:1
L:1/8
M:4/4
K:C
[M:6/8][K:D] .abc (f/g/) | afd ecA | d2 A A2 =c | BGB AGF | E2 E E2 (f/g/) | afd ecA | d2 A A2 G | 
 FDF ECE | D3 D2 :: (F/G/) | AFA BGB | AFA d2 A | BGB AGF | E2 E e2 (f/g/) | afa geg | fdf ecA | 
 (B/c/d)B (c/d/e)c | d3 d2 :|  