Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/4
Q:1/8=210
M:6/4
K:G
['G B', 'G A3 d/c/ B']  
X:1
L:1/4
Q:1/8=210
M:6/4
K:G
 D G F G3 | E A ^G A3 | F =G A B3 | G B ^c d3 | G B A G2 F | G E C D3 :| =c/B/ A G A3 | 
 d/c/ B A c3 | c/B/ A G B A2 | G G F G3 | c/B/ A/B/ G A3 | d/c/ B A/B/ c3 | c/B/ A G/A/ B/c/ A2 | 
 G/B/ A/G/ F G3 ||  