I Wanna Know (Zhang Hao song)

"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,^[2] 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.^[3]

"I Wanna Know" is a dance song written by Friday and Ogi, and composed by Star Wars, And1, and Athena of music production group Galactika.^[4] The song expresses the excitement of wanting to know every little thing about the other person with acoustic guitar and piano lines.^[5] The song is composed in the key F Major, and is 180 beats per minute with a running time of 2 minutes and 44 seconds.^[6]

Upon its release, "I Wanna Know" entered South Korea's Circle Digital Chart at number 80 in the chart issue dated January 14 to 20, 2024.^[7] It also topped the iTunes charts of 25 countries/regions, including Spain and Indonesia, which made the song debut at number 1 on iTunes' Worldwide Song Chart.^[8] On Circle's component charts, the song landed at number 1 on the Download Chart,^[9] and number 160 on the BGM Chart.^[10] "I Wanna Know" also peaked at number 9 on Billboard's World Digital Song Sales,^[11] and number 27 on Billboard Japan's Download Song Chart.^[12] The song was noted as the longest charting Kpop song on the Tencent Music Chart in 2024, having charted for 37 weeks and tied with "Fate" by I-dle.^[13]

Credits adapted from YouTube.^[18]