For several years during the 1990s, Yusuf Islam made recordings featuring lyrics about Islamic themes accompanied only by basic percussion instruments, which he felt were acceptable to his faith. In the late 1990s, he was featured as a guest singer of "God Is the Light" on an album by the Nasheed group, Raihan.He produced a children's album  in 2000 called A Is for Allah after realizing there were few materials designed to educate children about Islam. He also established the record label called Mountain of Light Productions, which donates a percentage of its proceeds to Islam's Small Kindness charity.On the occasion of the 2000 re-release of his Cat Stevens albums, Yusuf explained that he had stopped performing in English due to his misunderstanding of the Islamic faith. "This issue of music in Islam is not as cut-and-dried as I was led to believe . . . I relied on heresy (sic), that was perhaps my mistake." In 2003, after repeated encouragement from within the Muslim world, Yusuf Islam once again recorded "Peace Train" for a compilation CD, which also included performances by David Bowie and Paul McCartney. He performed "Wild World" in Nelson Mandela's 46664 concert with his former session player Peter Gabriel, the first time he had publicly performed in English in 25 years. In December 2004, he and Ronan Keating released a new version of "Father and Son" that debuted at number two, behind Band Aid 20's "Do They Know It's Christmas?". The proceeds of "Father and Son" were donated to the Band Aid charity. Keating's former group, Boyzone, had a hit with the song a decade earlier.In a 2005 press release, he explains his revived recording career: After I embraced Islam many people told me to carry on composing and recording but at the time I was hesitant for fear that it might be for the wrong reasons. I felt unsure what the right course of action was. I guess it is only now after all these years that I've come to fully understand and appreciate what everyone has been asking of me. It's as if I've come full circle - however, I have gathered a lot of knowledge on the subject in the meantime.In early 2005, Yusuf Islam released a new song entitled "Indian Ocean" about the 2004 tsunami disaster. The song featured Indian composer/producer A. R. Rahman, A-ha keyboard player Magne Furuholmen and Travis drummer Neil Primrose. Proceeds of the single went to help orphans in Banda Aceh, one of the areas worst affected by the tsunami, through Islam's Small Kindness charity. At first, the single was released only through several online music stores but later highlighted the compilation album Cat Stevens: Gold.On 28 May 2005, Yusuf Islam delivered a keynote speech and performed at the Adopt-A-Minefield Gala in Düsseldorf. The Adopt-A-Minefield charity, under the patronage of Sir Paul McCartney, works internationally to raise awareness and funds to clear landmines and rehabilitate landmine survivors. Yusuf Islam attended as part of an honorary committee which also included Sir George Martin, Sir Richard Branson, Dr. Boutros Boutros-Ghali, Klaus Voormann, Christopher Lee and others.In mid-2005, Yusuf Islam played guitar for the Dolly Parton album, Those Were the Days, on her version of his "Where Do the Children Play".  (Parton had also covered "Peace Train" a few years earlier.)In May 2006, in anticipation of his forthcoming new pop album, the BBC1 programme "Imagine" aired a 49-minute documentary with Alan Yentob called Yusuf: The Artist formerly Known as Cat Stevens. This documentary film features rare audio and video clips from the late 1960s and 1970s,  as well as an extensive interview with Yusuf Islam, his brother, several record executives, Bob Geldof, Dolly Parton, and others outlining his career as Cat Stevens, his conversion and emergence as Yusuf Islam, and his return to music in 2006. There are clips of him singing in the studio when he was recording An Other Cup as well as a few 2006 excerpts of him on guitar singing a few verses of Cat Stevens songs including "The Wind" and "On the Road to Find Out". Yusuf has credited his 21 year old son Muhammad Islam, also a musician and artist, for his return to secular music, when the son brought a guitar back into the house, which Yusuf began playing. Muhammad's professional name is believed to be "Yoriyos" and his debut album was released in February 2007. Yoriyos also created the art on Yusuf's album An Other Cup.Starting in 2006, the Cat Stevens song "Tea for The Tillerman" was used as the theme tune for the Ricky Gervais BBC-HBO sitcom Extras. A Christmas-season television commercial for gift-giving by the diamond industry aired in 2006 with Cat Power's cover of "How Can I Tell You".In December 2006, Yusuf was one of the artists that performed at the Nobel Peace Prize Concert in Oslo, Norway, in honour of the prize winners, Muhammad Yunus and Grameen Bank. He performed the songs "Midday (Avoid City After Dark)," "Peace Train," and "Heaven/Where True Love Goes." Yusuf also gave a concert in New York City that month as a "Jazz at Lincoln Center" event, recorded and broadcast by KCRW-FM radio, along with an interview by Nic Harcourt. Accompanying Yusuf on guitar was Alun Davies, who played guitar on many of his Cat Stevens records.  In April 2007, BBC1 broadcast a concert given at the Porchester Hall by Yusuf as part of BBC Sessions, his first live performance in London in 28 years (the previous being the UNICEF Year of the Child concert in 1979.) He played many new songs along with some of his classics, "Father & Son", "The Wind", "Where Do the Children Play?", "Don't Be Shy", "Wild World", and "Peace Train".In July 2007, Yusuf performed at a concert in Bochum, Germany, in benefit of Archbishop Desmond Tutu's Peace Centre in South Africa and the Milagro Foundation of Deborah and Carlos Santana. The audience included Nobel Laureates Mikhail Gorbachev, Desmond Tutu and other prominent global figures. He later appeared as the finale act in the German leg of Live Earth in Hamburg performing some classic Cat Stevens songs and more recent compositions reflecting his concern for peace and child welfare. His set included Stevie Wonder's "Saturn", "Peace Train", "Where Do the Children Play?", "Ruins", and "Wild World".Yusuf performed at the Peace One Day concert at the Royal Albert Hall on 21st September 2007.