on january 30, 2019, clc released their eighth ep, "no.1", with the title track "no". "no" is co-produced and co-written by label-mate jeon so-yeon and co-written by member yeeun. "no.1" debuted at no. 5 on billboard's world albums chart. on february 12, clc earned their first music show win on "the show" with the title track "no".