Craft musical compositions adhering to the prescribed form and the provided musical idea.
X:1
L:1/4
M:2/4
K:Bb
['g2- g']  
X:1
L:1/4
M:2/4
K:Bb
 d2 | d d | d2 | e f | g2- | g d | g2- | g z | g2 | f d | f2 | e c | B2- | B d | B2- | B z |]  