her third single "H.A.T.E.U." on the Late Show with David Letterman on November 13, 2009. In the UK, she appeared on the Mariah Carey: T4 Special where she was interviewed, followed by a performance, on November 14, 2009, and then taped a performance of "I Want to Know What Love Is" which aired on November 22 on The X Factor. On November 19, 2009, she was interviewed and performed on the first show of the second series of Alan Carr's Chatty Man as well as switching on the Christmas lights at the Westfield shopping center in London. She then appeared on GMTV with Lorraine Kelly for an encore interview and performance of her album's UK lead single "I Want to Know What Love Is" and later in the week on daily entertainment show This Morning. The Angels Advocate Tour in support of the album kicked off with a pre-tour show on December 31, 2009, at Madison Square Garden with Trey Songz before officially beginning on January 2, 2010, in Atlantic City, New Jersey. The tour is in support of Memoirs of an Imperfect Angel and will see Carey performing songs from past and present. The tour was speculated in November but not confirmed until December by Carey's official website. Singles "Obsessed" was the album's lead single and premiered on June 16, 2009. It was released for digital download on July 6, 2009. The song debuted at number eleven on the Billboard Hot 100, making it Carey's highest debut on this chart since May 1998. It has since peaked at number seven giving Carey her 27th top ten hit in the US, the second among women (behind Madonna who has 38, the most for any artist) and the fifth among all. "I Want to Know What Love Is", Carey's cover of Foreigner's hit, was announced as the album's second single. The song premiered to European radio on August 28, 2009 and US radio on September 14, 2009. It was released to US iTunes on September 22, 2009. The song failed to climb further than number 60 on the Billboard Hot 100 despite being successful on Adult Contemporary radio, reaching No. 10 on the AC chart. The song was more successful in Europe. It entered at number 6 in France and became the highest charting version of the song there, and reached number 16 on the European Hot 100. It also reached