[exclusive] — Avengedsevenfolddiscographyitunesplusaacm4a490trtr

: A major label debut on Warner Bros. Records that abandoned metalcore for a more melodic, classic metal approach, propelled by the hit "Bat Country".

extension, and the "490trtr" likely refers to a specific "490-track" mega-collection including live versions and rarities. avengedsevenfolddiscographyitunesplusaacm4a490trtr

This appears to reference:

Song Stories: Avenged Sevenfold - How We wrote 'The Stage' - YouTube. This content isn't available. Avenged Sevenfold - Apple Music : A major label debut on Warner Bros