Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/16
M:3/4
K:F
['FGAB c=Bcd c2c2 cdef g^fga g4 B2AB', 'c4 cfaf c2B2 B2A2 Acfc A2G2 G2F2']  
X:1
L:1/16
M:3/4
K:F
 FGAB c=Bcd c2c2 | cdef g^fga g4 | B2AB cBAB cBAG | FGAB cdeg f4 | f2fg a2af !>!d4 | e2ef g2ge c4 | 
 f2ef g2fg a2>f2 | edc=B d4 c4 :: cfaf c2B2 B2A2 | Acfc A2G2 G2F2 | BdBG AcAF efge | fefa gfed c4 | 
 cdef eceg f4 | efga bgeg f4 | dBdf cAcf BABd | cBAG G4 F4 :|  