Never went to a specific concert for one band but I have been to the Vans Warped Tour last year to see some bands, specifically A Day To Remember, Chiodos, Senses Fail, The Devil Wears Prada, and Underoath. Nothing really heavy tbh. Now that I think about it, I didn't see Dance Gavin Dance last year :[
This year, I'm going to the Warped Tour to see Emmure, I See Stars, In Fear And Faith, Bring Me The Horizon (some of their songs suck though tbh), iwrestledabearonce, Suicide Silence, Parkway Drive, and White Chapel. Some of my friends are probably gonna drag me to see shows that I know I won't like though :/