Gwyneth Paltrow is really taking this music business seriously.
The "Country Strong" singer, who performed "Coming Home" from her movie at the Oscars, is returning to "Glee" for a second run of guest appearances. Playing a sex-ed substitute, Gwyneth won't just be teaching about the birds and the bees for flirting with Matthew Morrison -- she'll be busting out the pipes, too.
Gwyneth sings lead in a cover of "Landslide," the iconic Stevie Nicks song. Listen and, in the comments, tell us how you think she did:LISTEN: