Her first single "Yes" was released under an indie record label in November 2004. In 2005, she changed labels to Sony Music Entertainment Japan. With Sony, she released "Hanabi made Ato Sukoshi" (花火まであとすこし - unofficial translation: "A Little Longer Until the Fireworks") in July. Her third single, "Sakasama no Chō" (逆さまの蝶, "The Inverted Butterfly"), was released on January 25, 2006. "Sakasama no Chō" was the opening theme of the 2005/2006 anime "Jigoku Shoujo" (地獄少女). It will also be used in the movie "Humoresque" to be released in February 2006. The opening theme for "Jigoku Shōjo"'s second season, "NightmaRe", was also performed by SNoW. It was released as a single on December 6, 2006.