I Wanna Know (Zhang Hao song)

"I Wanna Know" is a song recorded by Zhang Hao, a member of Zerobaseone, serving as an original soundtrack part 4 of the 2023 South Korean television program, Exchange 3. It was released digitally on January 19, 2024, through Stone Music Entertainment, as Zhang Hao's first solo original soundtrack.

Background release and promotion
"I Wanna Know" was first featured as a snippet at the beginning of Exchange 3's episode three, aired on January 5, 2024. It was next featured in the following week's episode during the dating show participants' first dates. The track was later confirmed to release on January 19 to digital music and streaming platforms, alongside the accompanying music video which includes scenes from the series and shots of Zhang Hao performing the song in a recording studio. "I Wanna Know" was performed exclusively on Mnet's M Countdown on February 1.

Commercial performance
Upon its release, "I Wanna Know" entered South Korea's Circle Digital Chart at number 80 for the chart issue dated January 14 to 20, 2024. On its component charts, the song landed at number 1 on the Download Chart, and number 160 on the BGM Chart. "I Wanna Know" also peaked at number 9 on Billboard's World Digital Song Sales, and number 27 on Billboard Japan's Download Song Chart.

Credits and personnel
Credits adapted from YouTube.

Personnel

 * Zhang Hao – vocals
 * friday. (Galactika *) – lyricist
 * Ogi (Galactika *) – lyricist
 * Byeol Deul Eui Jeon Jaing (Galactika *) – composser
 * And1 (Galactika *) – composser, arranger, piano
 * Athena (Galactika *) – composser, arranger, piano
 * Isntoff – guitar
 * On Seong-yoon – recorder
 * Uhm Se-hyeon – recorder
 * Gu Jeong-phil – mixer
 * Kwon Nam-oo – masterer
 * Kim Jeong-ha – producer
 * Yoon Min-ah – producer
 * Yang Yoon-seung- producer

Recording and management

 * Recorded at CSMUSIC& Studios and GCA Studios
 * Mixed at KLANG studio
 * Mastered at 821 Sound Mastering
 * Produced at CJ ENM