I will always have a special place in my heart for Hey Boy Hey Girl as an opener... because that was the song they opened with the first time I saw the Chems.
Come With Us was a great energetic opener, too. It went well with the tour (obviously!!) and the whole vibe of going with the Chems on the live journey.
Galvanize is a fantastic set opener that inspires fist pumping and crowd bouncing. It works because the song is instantly recognizable. Given the number of festivals the Chems played this past summer, opening with Galvanize made perfect sense, it was a good choice on Tom's and Ed's part in my opinion. For people at the fest who were there to see other bands, hearing a song so instantly recognizable as Galvanize probably drew quite a bit of attention from people who might not have wandered over to the Chems set otherwise.