Develop musical compositions by respecting the prescribed structure and combining the presented musical concept.
X:1
L:1/8
M:2/4
K:F
['f{/g}f/e/ fa c{/d}c/B/ cf BB/A/ Bg', 'f2 (c/B/)A/B/ cf dd/f/ AA/f/ c/B/A/B/ cf'  
X:1
L:1/8
M:2/4
K:F
 f{/g}f/e/ fa | c{/d}c/B/ cf | BB/A/ Bg | ec f2 :: (c/B/)A/B/ cf | dd/f/ AA/f/ | c/B/A/B/ cf | 
 ge f2 :|  