Baek So-hyun (, born November 18, 1996), known professionally as Seori (), is a South Korean singer-songwriter formerly under the label Atispaus. She made her solo debut on May 12, 2020, with the extended play ?Depacse Ohw.
Prior to her official debut, she often uploaded song covers to YouTube, because she wanted to see how her voice was received by others.
In 2022, Seori became the first Korean female soloist to feature in the Grammy's Global Spin series. In July 2023, Seori left her label, Atispaus. On October 30, Seori announced that she had signed with Label Sayu. On January 31, 2024, Seori dropped the single "Broken" which marks her first release under Label Sayu.
All credits adapted from KOMCA, unless otherwise noted.