Develop musical compositions incorporating the designated chords.
'D', 'Em', 'A7', 'D', 'Em', 'D', 'A7', 'D', 'D', 'Em', 'A7', 'D', 'Em', 'D', 'A7', 'D'  
X:1
L:1/8
M:4/4
K:D
 A, |"D" D2 A,>D F>D A>D | d2 c>d B>d A>F |"Em" E2 B,>E G>E g>f |"A7" (3efd (3cdB (3ABG (3FGE | 
"D" D2 A,>D F>D A>D | d2 c>d B>d A>F |"Em" G>B (3efg"D" (3fed a>A |"A7" (3Adf a>c"D" d2- d |] g | 
"D" f2 d>f (3Adf a>g | f>d A>d F>A d>f |"Em" g2 e>g (3Beg b>a | (3gab (3efg"A7" (3cde (3eag | 
"D" f2 d>f (3Adf a>g | f>d A>d F>A D>F |"Em" G>B (3efg"D" (3fed (3afd |"A7" (3AFD A,>C"D" D2- D |]  