"You Never Know" is a song recorded by Japanese-American singer-songwriter Ai featuring Taiwanese hip hop group MJ116 (also known as 頑童MJ116), released on August 9, 2019, by EMI Records as the second single from Ai's extended play, It's All Me, Vol.

Celebrating her twenty year anniversary in the music industry, Ai traveled to her hometown, Los Angeles, California to record new material.

[1] Looking to collaborate with various artists around the world, Ai discovered MJ116, a hip hop group based in Taiwan.

[2] After talking to the group via email and Line, Ai traveled to Taiwan to record a song.

Prior to meeting in-person, the group received affirmations from Ai, which built up their confidence to record with her.