Compose tunes based on the given letter-based musical structure and the supplied motif.
X:1
L:1/4
Q:1/4=100
M:3/4
K:G
['B G- G', 'B G- G']  
X:1
L:1/4
Q:1/4=100
M:3/4
K:G
 G2 d | B G- G | c2 B | A D- D | B G- G | E C- C | D G (F/A/) | G3 || d2 e/f/ | g B- B | c2 d | 
 e A- A | B2 c | d G F | E e c | d3 | g2 d | B G- G | c2 B | A D D | B G- G | E C- C | D A (F/A/) | 
 G3 |]  