Click on edit your details, near the bottom of the page you will see several items with boxes to the right
Real World Records
Real World Studios
Real World Remixed
Real World Multimedia
Click on the box to the right and save your changes at the bottom of the page, that will get you on the email list.
I believe it is Peter Gabriel to get concert ticket info but you can check them all.
Changes usually take anywhere from a few minutes to a few hours to go through.