ZZ Top will&nbsp;perform blues, rock and more&nbsp;at&nbsp;Ives Concert Park in Danbury this Thursday, Aug. 25.&nbsp; The Cadillac Black will open.&nbsp; Tickets for reserved seats are $67, $57 and $47. It&amp;#8217;s&nbsp;$37 to sit on the lawn. To reserve tickets, call 866-55-tickets or visit here.