In June 2007, Canadian singer-songwriter Chantal Kreviazuk, with whom Lavigne co-wrote the majority of her second album, "Under My Skin", spoke to "Performing Songwriter" magazine about Lavigne's songwriting ability and ethics. Kreviazuk claimed that the song "Contagious" was based on a track she had sent to Lavigne in 2005. On 6 July 2007, Lavigne denied the accusation in an open letter on her website. She also threatened legal action against Kreviazuk for her allegations, and Kreviazuk ultimately made a full public apology and retracted the statements.