BTOB's Lee Changsub is taking his solo concert from Seoul on a nationwide tour. He will hold '2026 Lee Changsub Solo Concert Unknown' at the BEXCO Auditorium in Busan on October 31 and November 1, and plans to continue in a total of six cities — Busan, Suwon, Jeonju, Ulsan, Daegu and Goyang. It is his third nationwide tour, following 'The Wayfarer' and 'EndAnd.' The Seoul shows, held from the 16th to the 18th at Kyung Hee University's Grand Peace Palace, combined an orchestra with a live band, featuring staging inspired by the four seasons and a wide musical spectrum performed live. Lee Changsub released his 3rd mini album 'Lee;Make (Fragmenta Amoris)' in September and promoted title track '사계, 그리고 너' (Four Seasons, and You). He was recently named a TOP10 nominee at the 2026 Melon Music Awards (MMA2026).