Build a musical work using the provided motif and following the indicated form.
X:1
L:1/8
M:3/4
K:F
['af g2 fa ca f2 eg cg', 'f2 z2'  
X:1
L:1/8
M:3/4
K:F
 af |:"C7""_g" g"_b"b"_e" e"_b"b"_g" g2 |"F""_f" fa ca f2 |"C7" eg cg ec |"F" fA cf a"_c"c' | 
"C7""_g" g"_b"b"_e" e"_b"b"_g" g2 |"F""_f" fa ca f2 |"C7" eg cg ec |1"F" f2 z2 af :|2 
"F" f2 z2 c2 |:"C7""_b" b"_g"g"_e" e"_b"b"_g" g"_e"e |"F""_a" af ca fc |"C7" ge cg ec | 
"F" fA cf a"_c"c' |"C7""_b" b"_g"g"_e" e"_b"b"_g" g"_e"e |"F""_a" af ca fc |"C7" ge cg ec |1 
"F" f2 z2 c2 :|2"F" f2 z2 z2 |]  