SIGNAL Profile: SIGNAL Facts SIGNAL (시그널) was a 4-member boy group under J Star Entertainment. The group consisted of: Kyuhwan, Gihwan, Youngho, and Bokeun. They debuted on August 28th, 2019 with their mini album [‘THE FIRST SIGNAL : BEGINS ‘]. The members left J Star Entertainment since 2019 and they joined Elmusix in 2021. They … Continue reading SIGNAL Profile and Facts