Kyuhyun's new OST single has just been released.

On March 6 KST, "Promise You," the Super Junior member's OST single for the drama 'Forecasting Love and Weather,' was officially released.

"Promise You" is a love ballad with lyrics that make a vow to always be with the other person, comparing the heart to weather to add a poetic and deep impression. The song utilizes piano and string to add both calm and dramatic moments to enhance the emotion of the song. For the single, 'Forecasting Love and Weather' music director Gaemi collaborated with hit OST producer Han Bam, who previously worked on OST songs for 'Young Lady & Gentleman,' 'Do You Like Brahams?,' and 'When the Camellia Blooms.'

The music video for "Promise You" follows the developing love story between characters Jin Ha Kyung and Lee Si Woo, played by Park Min Young and Song Kang respectively. The drama 'Forecasting Love and Weather' is a workplace romance drama depicting the professional and personal lives of Korea Meteorological Agency employees.

Check out the full music video above!