I am trying to find out if there is any way to arrange a meet and greet or back stage pass as a 50th Birthday gift for my boyfriend whose dream is to meet Sammy Hagar, his rock idol. The concert he will be attending is on September 28, 2017 at DTE Energy Music Theater in Michigan. Also, I am wondering when and if I can order pre-sale tickets to get best possible seats for him. Any help with this would be greatly appreciated as soon as possible. Tickets go on sale April 29th which is this weekend. Thanks in advance.