Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
Q:1/8=180
M:6/8
K:D
['F2 A AFA AFA', 'f/g/ afd dfd efd c2 A']  
X:1
L:1/8
Q:1/8=180
M:6/8
K:D
|: A | F2 A AFA | AFA AFD | G/A/BG F/G/AF | BGE E2 G | F2 A AFA | AFA d2 A | Bcd AFd | AFD D2 :: 
 f/g/ | afd dfd | efd c2 A | G/A/BG F/G/AF | BGE E2 f/g/ | afd dfd | efd c2 A | Bcd AFd | AFD D2 :|  