Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
Q:3/8=90
M:6/8
K:G
['D GAG ABd e/f/gB A2 d BGA', 'G2 g eeg eeg e>fg edc ded']  
X:1
L:1/8
Q:3/8=90
M:6/8
K:G
 D | GAG ABd | e/f/gB A2 d | BGA B2 A | BGG G2 :: g | eeg eeg | e>fg edc | ded ded | dgd dBG | 
 cBc dBd | egc A2 d | BGA B2 A | BGG G2 :|  