Produce musical compositions that observe the prescribed structure and blend the offered musical idea.
X:1
L:1/8
M:4/4
K:C
['B A']  
X:1
L:1/8
M:4/4
K:C
 G | c3/2 c/ B A | G3 G | (c d e) c | d3 c | f e d c | B A B c | d (c [Bd] [Ae]) | [Gd]3 d | 
 e f g e | c3 g | f e e/d/ c | d3 G | c d e g | f3 e | d2 d2 | c4 |]  