acoustic guitar John "J.R." Robinson – drums Willie Weeks – bass guitar Track listings Digital download "I Want to Know What Love Is" – 5:41 Remixes "I Want to Know What Love Is" (Piper Remix) – 4:05 "I Want to Know What Love Is" (Piper Club Mix) – 7:42 Charts In the US, the song peaked at number 14 on the Billboard Adult Contemporary chart. On the Hot Dance Club Songs of Billboard, it debuted at number 50 and peaked at number 12. It is also her first single to chart in Sweden, where it debuted at number 67 and peaked at number 15. Release history Mariah Carey version "I Want to Know What Love Is" was covered by American singer Mariah Carey and released as the second single from her twelfth studio album, Memoirs of an Imperfect Angel (2009). The single, produced by Carey, C. "Tricky" Stewart and James "Big Jim" Wright, was sent to European radio stations on August 28 and first impacted US radio on September 14, 2009. Mick Jones said of her version: "I think she's actually retained the integrity of the song. You know, the arrangement is very similar to the original. They haven't tampered with the song too much. She's captured a certain emotional thing, a feeling." Critical reception The single was generally well received by critics; Australian magazine Rhyme & Reason stated that "[While Carey stayed] [...] true to the original, this piano-led remake is less an overhaul of the classic '80s hit than it is a modest but impressive update." Bill Lamb from About.com said that "Mariah Carey's new version could leave you speechless. The diversity of vocal coloring expressed in this recording is stunning. While the single 'Obsessed' remains disappointing, this single is a reminder of just how formidable Carey's talents are given a strong production and arrangement". Writing in a Los Angeles Times music blog, Todd Martens said, "[T]ackling a well-known power ballad seems like a safe choice. It's a comfortable fall-back plan after "Obsessed" performed well, but did far from blockbuster numbers. It will undoubtedly be a hit, but it's giving me more reason to fear Imperfect Angel." Performances and promotion Carey debuted "I Want to Know What Love Is" at her Live at the Pearl concerts in the Pearl Arena at The Palms Casino & Resort, Las Vegas, on September 11 and 12, 2009. Carey performed the song