Did Lee Hong-gi and Jung Yong-hwa released their first solo albums in the same year?
Lee Hong-gi:  Lee released his first solo extended play "FM302" in South Korea on 18 November 2015 and his Japanese album "AM302" on 9 December 2015. Jung Yong-hwa:  In 2015, Jung made his solo debut with the album "One Fine Day".
i don't know