On January 26, Rain made a surprise announcement via his Instagram!

He wrote:

As many of you know, Rain and his mentor J.Y. Park successfully debuted as a historical duo, JYB, back on December 31, releasing the single "Switch To Me". Now, thanks to the explosive response from fans, Rain has just promised another collaboration with a female artist!

Let's hold Rain to his word and make it happen! Who do you want to see Rain collaborating with next?