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"Gradation Vol.4" is the ninth digital single by ELO. It was released on May 29, 2018, and is the last part of his four-part "Gradation" single project.

Track list[]

  1. "Osaka" (feat. Zico) - 3:25

Merchandise[]

On May 29, 2018, two t-shirts were announced as official "Osaka" merch and put for pre-order the same day on AOMG's official online merch store, A6OVE.[1]

References[]

Video links[]