There is no "Sour Grapes" from hip-hop artists San E and Mad Clown this time around.

San E and Mad Clown's collaboration single is doing great as it reached number one on online music charts such as Melon, Olleh, and Bugs on Thursday, Nov. 19.

"Sour Grapes" was released on 1theK's official YouTube channel on Wednesday, Nov. 18, and the song tells about two guys who fall in love but acts bold and irrationally when blinded by love.

San E's previous collaboration was on June 10, 2014, which he released his single titled "A Midsummer Night's Sweetness." The song featured After School's Rania, and it topped number one on multiple music charts.

Mad Clown has also had great collaborations as he worked with artists such as SISTAR members Soyou and Hyolyn. His last promotion was earlier this year, on Jan. 9, which he released his single titled "Fire" where  EXID's Hani was featured in the music video.