Produce musical compositions that observe the prescribed structure and blend the offered musical idea.
X:1
L:1/8
M:2/4
K:F
['d2 f2 c2 z c']  
X:1
L:1/8
M:2/4
K:F
 FGAB | cccc | d2 f2 | c2 z c | d2 f2 | c2 z c | cBBB | BAAA | G2 c2 | F2 z A | G2 c2 | F2 z2 |]  