Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
Q:1/4=120
M:4/4
K:D
['B2 Ad']  
X:1
L:1/8
Q:1/4=120
M:4/4
K:D
"^Moderate." D | F>GAB{B} A2 de | (f>d){d}cB A2 z B/c/ | d>efa d2 Ad | (BA)GF{F} E2 z D/E/ | 
 F>GAB (A2 d)e | fdAf !fermata!g2 (fg) | a<f{f}ed{c} B2 Ad | F2{F} ED D2 z D | (F<A)AB (AB)de | 
 fdAf !fermata!g2 fg | a>f{f}ed{c} B2 Ad |{G} F2 ED D2 z |]  