Craft musical compositions adhering to the prescribed form and the provided musical idea.
X:1
L:1/8
Q:3/8=135
M:6/8
K:Bb
['B3 (dcB)', 'B3 (dcB)'  
X:1
L:1/8
Q:3/8=135
M:6/8
K:Bb
 B3 (dcB) | g2 e d2 c | B3 (dcB) | c2 F A2 F | B3 (dcB) | g2 e d2 c | (def) c2 e | d3 B3 :: 
 B3 (dcB) | b2 B b2 B | d3 (dcB) | c2 F A2 F | B3 (dcB) | g2 e (def) | bgf dcB | c3 B3 :|  