Produce musical compositions that observe the prescribed structure and blend the offered musical idea.
X:1
L:1/8
M:2/4
K:F
['(CF) A-A A-A A2 GA G F3-']  
X:1
L:1/8
M:2/4
K:F
|: (CF) | A-A A-A | A2 GA | G F3- | F2 CF | A-A FA | c-c BA | [GECB,]4- | [GECB,] z (cB) | A-A AG | 
 [F_EC]2 ([G_EC][AEC]) | cB- B-B | D2 (ED) | C2 EF | G2 AG | [FCA,]4- | [FCA,] z |]  