앰퍼샌드원 (AMPERS&ONE) 4th Mini Album [DEFINITION] 𝐂𝐎𝐍𝐂𝐄𝐏𝐓 𝐏𝐇𝐎𝐓𝐎 𝐇𝐄𝐑𝐄 𝐯𝐞𝐫. 2026.04.08 18:00 (KST) #앰퍼샌드원 #AMPERSANDONE #DEFINITION #최지호 #JIHO