This is a cool idea Spotify however judging by most of the other comments as well as my own experience your doing an incredibly poor job executing this promotiom. I have been a premium member for a very long time as well as listen to D.R.A.M. and many similar artists on a daily basis as well as just got back from a cross country road trip where all I listened to was Spotify. If I'm not eligible along with most of theses other members that's very sad and I will most likely be finding another streaming service that's not so exclusive or expensive!
I agree this is a great idea, but I have one question--does it support opening bands? For instance, I see there is a Spotify Presale for the new Bring Me the Horizon tour. Underoath opens for them. I don't listen to Bring Me the Horizon much, but I know Underoath was close to being, if not, my top artist for 2015. I bet it will be similar for 2016. I'd love access to the presale, and believe I have demonstrated support Underoath, but I'm not sure it recognizes them as an opening band. Maybe it does and I'm not good enough, haha, but thought I'd bring it up. Thanks Spotify!