Question: Which song was released earlier, I Walk The Line or Zelos (Single Album)?
Sentence (from "Zelos (single album)"): Zelos( Greek: Ζῆλος," Zēlos", literally" zeal") is the fifth single album, and the first part of the" VIXX 2016 CONCEPTION" trilogy, followed by" Hades" and" Kratos", by the South Korean boy band VIXX.
Relevant evidence: Yes