We were doing challenges for this record, weird things to bounce ideas off and impose some boundaries or walls to run ideas up against and inspire creativity. Two of those went onto that song. One was making a riff based on the Fibonacci sequence, which is the guitar riff that comes in at the beginning and then comes back later. Another one was using quartal chords, a kind of chord that a lot of jazz musicians started using at a certain point because they’re built on fourths instead of thirds like normal chords. They can float over things a little bit, a little less melodically defined.