"We Didn't Know" is a mid-tempo duet by Whitney Houston

Whitney Houston

Whitney Elizabeth Houston is an American singer, actress, producer and a former model. Houston is the most awarded female act of all time, according to Guinness World Records, and her list of awards include 1 Emmy Award, 6 Grammy Awards, 30 Billboard Music Awards, 22 American Music Awards, among...

 and Stevie Wonder

Stevie Wonder

Stevland Hardaway Morris , better known by his stage name Stevie Wonder, is an American singer-songwriter, multi-instrumentalist, record producer and activist...

, and was released as the sixth and final single from Houston's third album I'm Your Baby Tonight

I'm Your Baby Tonight

I'm Your Baby Tonight is the third studio album by American pop/R&B singer Whitney Houston; released by Arista Records on November 6, 1990. Following the run of this album, Houston continued to achieve widespread commercial success throughout the 1990s, venturing heavily into films—while...

. The single peaked at number 20 on Billboard

Billboard (magazine)

Billboard is a weekly American magazine devoted to the music industry, and is one of the oldest trade magazines in the world. It maintains several internationally recognized music charts that track the most popular songs and albums in various categories on a weekly basis...

's R&B Singles

Hot R&B/Hip-Hop Songs

Hot R&B/Hip-Hop Songs, is a chart released weekly by Billboard in the United States.The chart, initiated in 1942, is used to track the success of popular music songs in urban, or primarily African American, venues. Dominated over the years at various times by jazz, rhythm and blues, doo-wop, soul,...

chart. There was no music video made for the song.

The song is about two good friends that realize that they have romantic feelings for each other and are more than just friends — they love each other, and they "didn't know."

Personnel

Credits

• Producer, writer, vocal arrangement — Stevie Wonder
• All instruments — Stevie Wonder
• Background vocals — Kimberly Brewer, Lynne Fiddmont-Linsey, Dorian Holley, Keith John
• Engineer, mixer — Bobby Brooks
• Assistant engineer — Steve VanArden, Danny Normando
• Sound design — Robert Arbittier
• Stevland Morris Music Project Coordinator — Stephanie Andrews

Recording and mixing

• Recorded and mixed at Wonderland Studios, Los Angeles
• Lead vocals recorded at Sigma Sound Studios, New York City