Seongri has officially made his solo debut!

The C2K Entertainment singer first won hearts as a contestant on the second season of 'Produce 101' and later through project group Rainz. However, his debut single "That's You" is his first time stepping out as a solo artist.

"That's You" is a smooth R&B ballad that showcases the singer's pure vocals. The romantic mood of the song is highlighted by a music video that takes place mostly on a beach near sunset. The song has been described by his agency as 'a special springtime serenade.'

Meanwhile, "That's You" is the title track on Seongri's debut solo album 'First Love,' which was released on April 15.

Check out the full music video above!