She took part in Swedish TV4 music program Super Troupers in 2004, and in Idol 2008 where she reached the Final 5 before being eliminated.

[5] Bergendahl successfully applied for the TV4 talent show Idol 2008 with her rendition of Bonnie Raitt's "Have a Heart", which received praise from the jury consisting of Laila Bagge, Anders Bagge and Andreas Carlsson.

[6] She later sang songs like ABBA's "Mamma Mia", Py Bäckman's "Stad i ljus", "Save Up All Your Tears", "Bleeding Love" by Leona Lewis, "The Best" and "Over the Rainbow".

[7] In 2009, Bergendahl was approached by Kristian Lagerström and Bobby Ljunggren and asked if she wanted to record a song for Melodifestivalen 2010.

Anna Bergendahl participated in Melodifestivalen 2010 with the song "This Is My Life", written and produced by Kristian Lagerström (lyrics) and Bobby Ljunggren (music).

"This Is My Life'" was the first ballad to win Melodifestivalen since 1998 when Kärleken är won and was also Sweden's 50th entry in the Eurovision Song Contest.