Hyoyeon (HYO) is back with another solo single!

On August 9 KST, the Girls' Generation member returned with her new single "Second." 

"Second" is a summer dance-pop track with a cheerful rhythm and a heavy 808 bass. The song contains a message telling listeners that it is okay to take a breather once in a while despite how hectic daily life can be sometimes. "Second" does not only feature R&B singer-songwriter BIBI, but she participated in writing the song as well.

In the music video, Hyoyeon and BIBI are seen not only performing, but also enjoying a summer vacation-style atmosphere, matching the single's 'pro-relaxation' theme.

Meanwhile, Hyoyeon commemorated the comeback with fans through a special VLIVE countdown event.

Check out the music video for "Second" above!