Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/8
Q:1/4=104
M:2/4
K:G
['g/a/b/a/ gd e/f/g/f/ eB', "d2 d/e/f/e/ de f/g/a/g/ fg ab c'b", 'gf gf e2 dg']  
X:1
L:1/8
Q:1/4=104
M:2/4
K:G
 g/a/b/a/ gd | e/f/g/f/ eB | cB AG | FG AD | g/a/b/a/ gd | e/f/g/f/ eB | gf ed | A^c d2 :| 
 d/e/f/e/ de | f/g/a/g/ fg | ab c'b | a/g/f/e/ d2 | ec ge | df ga | c'b ag | df g2 :| gf gf | 
 e2 dg | f>g ag | c'b a2 | gf gf | e2 dg | fg b/a/g/f/ | g2 G2 :|  