sentences:  "Vice" noted that her songs incorporated the mixolydian mode, a melodic structure used in "blues-based and alternative rock" music, which set her songs apart from those in pop music for not fitting a common major or minor chord.Regarding her songwriting process, Lorde explained that the foundation to her songs began with the lyrics, which could sometimes stem from a singular word meant to summarise a specific idea she had tried to identify.For "Tennis Court", Lorde wrote the music before lyrics.