The last couple times I shot some concert footage with my phone were:

• Weird Al Yankovic, at a free outdoor concert in Montréal: I had seed that on that tour, he would sometimes do a medley of Yoda and The Saga Begins, so when I came on stage in Jedi regalia, I started recording. In the end, he only did Yoda with some kind of extended vocal jam in the middle, still a lot of fun, and I’m glad I captured it.
• Tears for Fears, a few years ago: I captured my favorite song, Head Over Heels. Recording any more would have made the show less enjoyable for me.