2 confirmed releases and premieres in January 2021: 2 artists, 0 music videos. Sources are official YouTube channel teasers/MVs/audio, Apple Music release dates and the Wikipedia release list, marked on every line. Rumoured or unconfirmed dates are not listed. Dates in KST.
By source: Apple Music 2; by type: Song 2. The busiest day was 2021-01-09 (1), and the most frequent artists were 리도어(Redoor) (1), Car, the garden (1). YouTube entries come from the daily 05:35 KST RSS sweep of 36 official channels, so only premieres after tracking began appear; Apple Music dates cover songs that reached the Apple top 100; the Wikipedia list is album-level and may not link to a song page.
| Song | 영원은 그렇듯리도어(Redoor) | Apple Music |
| Song | 그대 작은 나의 세상이 되어Car, the garden | Apple Music |