A Glee cover of The Darkness' 'I Believe in a Thing Called Love' that features Adam Lambert has been added to iTunes.

The singer will perform the song alongside the cast of Glee when the TV show returns to US screens on Tuesday (February 25).

The programme's version of the song has now been made available to buy on iTunes, with a short preview offered to fans.

Lambert has sporadically been appearing on the current series of Glee as a guest, but his busy schedule means that his role as Elliott 'Starchild' Gilbert won't be made permanent.

The singer is expected to release a new album this year and shows with Queen have also been mooted.

Listen to the Glee cover below: