Compose a musical piece with harmony using the indicated chord pattern.
'D', 'A7', 'D'  
X:1
L:1/4
M:3/4
K:D
 A |:"D" d3/2 A/ A | F A d |"A7" c3/2 A/ A | G2 A | c3/2 A/ A | G A c |"D" d3/2 A/ A |1 F2 A :|2 
 F2 z |]  