The Second Single from the album "The Fame Monster".

Credits and personnel:
Lady Gaga – co-production, songwriting, vocals
Beyoncé Knowles – Songwriting, vocals
LaShawn Daniels – songwriting
Lazonate Franklin – songwriting
Hisashi Mizoguchi – recording (Knowles' vocals)
Mark "Spike" Stent – mixing
Mike "Handz" Donaldson – recording, special effects
Paul Foley – recording
Rodney Jerkins – songwriting, composition, mixing, production
"Telephone" is written by Lady Gaga, Rodney Jerkins, LaShawn Daniels, Lazonate Franklin and Beyoncé. Although constructed as a duet, the song features Knowles first appearing in the middle verse and singing her lyrics through a brief interlude, and backs the chorus during the rest of the song. Essentially, Gaga's in a club and her boyfriend keeps ringing, but she can't talk right now because she's drinking and dancing to her favourite song. The chorus runs thusly: "Stop calling, stop calling, I don't want to talk anymore." The song consists of an expanded bridge, verse-rap and an epilogue where the caller gets through to her voicemail.

2006 CD single for this bass heavy and high hat return of American R&B superstar, Beyonce Knowles. Taken from her second solo album, B Day, 'Deja Vu' is a New Orleans-inspired funk workout from the sometime-Destiny's Child singer, featuring familiar cohort rapper Jay-Z. Features five versions of 'Deja Vu': Main Version, Freemasons Radio Mix, Freemasons Extended Mix, Nusoul Mix and Nusoul Mixshow Mix. Sony/BMG.