Cross Gene (Korean: 크로스진; stylized as CROSS GENE) is a five-member boy group based in South Korea. Signed under Amuse Korea, the group consists of South Korean members: Shin, Sangmin, Yongseok and Seyoung and Japanese member Takuya. They released their debut mini-album "Timeless: Begins" in 2012, which peaked at #8 on the Gaon weekly album chart.
Sangmin and Yongseok made their own mini-album that was released in 2012
It is incorrect because they did not make the album on their own, it was the five group members together that made and released the album