Create a composition based on the provided motif while adhering to the necessary musical structure.
X:1
L:1/8
M:2/4
K:none
['g/a/g ef g/a/g e2 gf f/e/d', 'aa/g/ fa cc/B/ Af ec z g'  
X:1
L:1/8
M:2/4
K:none
[K:C]"C" g/a/g ef | g/a/g e2 |"G7" gf f/e/d |"C" eg c'2 | g/a/g ef | g/a/g e2 |"G7" gf f/e/d | 
"C" ce c z ::"G7" Bc de | ff/g/ a2 |"C" gg/f/ eg | ee/d/ c2 |"G7" Bc de | ff/g/ a2 | gf/e/ de | 
"C" ce c z ::[K:F]"F" aa/g/ fa | cc/B/ Af |"C7" ec z g |"F" fc z f | aa/g/ fa | cc/B/ Af | 
"C7" ec z g |"F" ff f z ::[K:C]"G7" g>d g>f |"C" fe e/d/c |"G7" ed d/c/B |"C" dc c/d/e/f/ | 
"G7" g>d g>f |"C" fe e/d/c |"G7" ed d/c/B |"C" ce c z :|  