Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
M:4/4
K:D
['a>g f>dd/d/d A>dd/d/d f>ga<f d2 e>d c>AA/A/A', 'f<a a2'  
X:1
L:1/8
M:4/4
K:D
 a>g | f>dd/d/d A>dd/d/d | f>ga<f d2 e>d | c>AA/A/A E>AA/A/A | c>de<c A2 (3bag | f>d d2 A>d d2 | 
 f>da<f d2 (3fga | b>ga<f g>ef<d | e>c (3ABc d2 || a>g | f<a a2 f<a a2 | f>da<f d2 (3def | 
 g<b b2 g<b b2 | g>eb<g e2 a>g | f<a a2 f<a a2 | f>da<f d2 (3fga | b>ga<f g>ef<d | c>eA<c d2 ||  