In 2004 Sevi won first prize and special award of the jury, participating at the "National Competition for Singers", Sofia.
In 2006, Sevi participated with an author song on the "International Pop-Rock Competition for Singers and Composers" in Veliko Turnovo.
She has been the only Bulgarian singer to sing in the show of Sky Italia in "Club Lost" during the Sanremo Music Festival in 2007.
She co-wrote many new songs with Rally Velinov (musician and songwriter, who is also author of the arrangements of many of her recordings, and later became the bass player in the band Sevi).
In summer of 2008 Sevi recorded 11 new songs in collaboration with Rally Vellinov and the guitar player Peter Bratanov.
In August 2010 the two guitar players were replaced by the former guitarist of the alternative rock band "Awake" – Peter Bratanov.