Tumblr is a really good way to see what they’re wanting to hear and what elements they’d like to see in the show. When I’m walking around in my daily life and a little kid comes up to me or a teenager comes up to me or a mom comes up to me, the songs that they bring up as being songs that affected them are the ones that I’m going to kind of stockpile and decide to play. The songs that I haven’t been hearing as much about, those are the ones that didn’t make the cut.
—  Taylor Swift on Tumblr and tour setlist (Rolling Stones 2015)