Develop musical pieces that incorporate the given motif and follow the specified structure.
X:1
L:1/8
M:4/4
K:D
['e>f c<e'  
X:1
L:1/8
M:4/4
K:D
 A |"D" d>e d<f d>e d<f |"Em" e>f g/f/e/d/"A7" c<e e>g |"D" f<d d>A"Bm" d>e d>f | 
"A7" a>b a>g"D7" f>g a>f |"G" g>a g<b"D" f>g f<a |"Em" e>f g/f/e/d/"A7" c<e e>c | 
"D" d/c/B/A/ B/A/G/F/"Em" G/F/E/D/ E>g |"D" f<a"A7" e>f"D" d2 d>e |] 
"D" f/g/a/f/ d>g"Bm" f/g/a/f/ d>f |"Em" e>f g/f/e/d/"A7" c<e e>g | 
"D" f/g/a/f/ d>g"Bm" f/g/a/f/ d/e/f/g/ |"A7" a>b a/b/a/g/"D7" f>g a>f | 
"G" g/f/g/a/ g/b/a/g/"D" f/e/f/g/ f/a/g/f/ |"Em" e>f g/f/e/d/"A7" c<e e>c | 
"D" d/c/B/A/ B/A/G/F/"Em" G/F/E/D/ E>g |"D" f<a"A7" e>f"D" d2 d |]  