on november 19, 2007, the singer released "preta", which features seu jorge. the song, which is strongly influenced by samba, was one of the most played in the country during the carnival. for the 2009's carnival, mercury recorded the song "oyá por nós", who wrote with alfredo moura and margareth menezes. the theme, based on the song "ketu de iansã" was first used by moura in the doctoral ceremony honoris-cause of gilberto gil at the university of aveiro in portugal. after that, moura used the theme in a play in vienna, austria, at the university of musicology. a year later, he showed the theme for daniela, who did not know and she immediately wanted to record it to launch in the carnival. in 2009, rolling stone brasil magazine named daniela as one of the 100 greatest artists of brazilian music of all time. the names chosen by the expert jury, only 16 were women.