& Relationship, 161,000 copies, are her best sales week to date. The album was certified gold in August 2006, selling 730,000 in US and 1,300,000 worldwide. "I Am Not My Hair", a collaboration with Akon, was the most successful release from Testimony: Vol. 1., reaching the U.S. Billboard Hot 100 at #97 and the UK Singles Chart at #65. On the April 16, 2007 episode of The Oprah Winfrey Show entitled "After Imus: Now What?", Arie guest-starred as a panelist. Arie performed a duet with singer Anthony David for his song "Words" for his 2008 album Acey Duecy. Her next album, Testimony: Vol. 2, Love & Politics was released on Tuesday, February 10, 2009. It debuted at No. 3 on the Billboard 200, and No. 2 on the R&B chart. Within this CD, Arie collaborated with such artists as Sezen Aksu, Keb Mo, Gramps Morgan and Musiq Soulchild to fulfill her self-proclaimed desire to "do projects with people who are making music that is meaningful, with a lot of integrity and a lot of sonic diversity". Arie also identified this CD as her first to write and sing songs without worrying about public opinion after a much-needed vacation to Hawaii. The album was her first produced and released after her departure from Motown to Universal Records. Arie performed "Video" with British singer Adele at the 2009 VH1 Divas. Arie is one of over 70 artists singing on "We Are the World: 25 for Haiti", a charity single in aid of the 2010 Haiti earthquake. Arie contributed vocals to "Imagine" for the 2010 Herbie Hancock album, The Imagine Project along with Seal, Pink, Jeff Beck, Konono N°1, Oumou Sangare and others. In the fall of 2010, she was a featured guest vocalist on Carlos Santana's version of The Beatles classic song "While My Guitar Gently Weeps" from his album Guitar Heaven. The song also features Yo-Yo Ma on cello. In September 2012, she featured in a campaign called "30 Songs/30 Days" to support Half the Sky: Turning Oppression into Opportunity for Women Worldwide, a multi-platform media project inspired by Nicholas Kristof and Sheryl WuDunn's book. In March 2013, it was announced that Arie was working on her upcoming fifth studio album, Songversation, which was released on June 25, 2013. The first single of the album, "6th Avenue", was released on iTunes on November 4, 2012; it was produced by India Arie