NCT 2020 Resonance is the second studio album by South Korean boy band NCT, an unlimited group project under the management of SM Entertainment. Similar to their previous release NCT 2018 Empathy, NCT 2020 Resonance is part of the "NCT 2020" project; which saw all current NCT members from several units collaborating on a full-length release. This time, the album features all 23 members from three current units of NCT; NCT 127, NCT Dream, and WayV, while introducing two new NCT members, namely Shotaro and Sungchan. It would also be the final NCT album to feature Lucas due to his hiatus and eventual departure in 2023. The first part was released on October 12, 2020, and the second part was then released on November 23, 2020.

Jeong Yun-o, professionally known as Jaehyun. is a South Korean singer. He is a member of the South Korean boy band NCT and its sub-units NCT 127 and NCT DoJaeJung.