depth and brilliance to them. The listener's ear does not tire or want for more, humble as Adentro is." Arjona further commented that Adentro was "a very representative and tremendously complete album," adding that "having different producers made it rich in possibilities." Adentro became Arjona's second studio album to chart on the Billboard 200, reaching No. 126. It reached No. 3 on the Top Latin Albums and No. 2 on the Latin Pop Albums charts. Five singles were released from Adentro: the lead single, "Acompañame A Estar Solo" (No. 7 on Latin Songs, No. 1 on Latin Pop Songs), "Pingüinos En La Cama" featuring Spanish singer Chenoa (No. 44 on Latin Songs, No. 19 on Latin Pop Songs); "Mojado", featuring American Tejano/Norteño band Intocable (No. 34 on Latin Songs, No. 30 on Latin Pop Songs), "A Ti" (No. 14 on Latin Songs, No. 3 on Latin Pop Songs), and "De Vez En Mes" (No. 49 on Latin Songs, No. 16 on Latin Pop Songs). The album sold more than a million copies worldwide. 2006–2007: Adentro Tour and Quién Dijo Ayer In 2006, Arjona started the first leg of his world tour, named the Adentro Tour. The tour resumed in 2007 for a second leg, in which he visited more countries. Approximately two million people attended the performances. The tour was officially closed on 14 September 2007 on the mainland city of Barquisimeto, Venezuela, during the International Fair, in front of more than 100,000 people. On 21 August 2007, Arjona released his fifth compilation album, Quién Dijo Ayer. The album is a two-disc set which contains, on the first disc, new versions of past hits, some of them including featured artists such as Marta Sánchez on "Tarde (Sin Daños a Terceros)" from Sin Daños a Terceros; Panteón Rococó on "Si El Norte Fuera el Sur", from the album of the same name; Marc Anthony on "Historia de Taxi", from Historias; Eros Ramazzotti on "A Ti", from Adentro, and Sandro on "Realmente No Estoy Tan Solo", from Historias, and which was the last song recorded by the singer, who died on 4 January 2010. Arjona's manager told Argentinian newspaper Clarín that "[the singer] had the idea of inviting Roberto [Sandro] for his album, he [Sandro] showed enthusiasm and manifested the same degree of appreciation to Arjona. It seemed to him that he [Arjona] was an artist who proclaims the same values he