"Déjà Vu" is a song by Romanian musician featuring Romanian recording artist Inna for the latter's debut studio album, Hot (2009). Released in 2009, it was written and produced by Sebastian Barac, Radu Bolfea and Marcel Botezan. Musically, the single is of the dance genre, and originally contained the vocals of Romanian singer Alessia. However, after a feud over compensation between Taylor and her, the song was handed to Inna, although the early version had already been released.

When premiering the new version of "Déjà Vu", Taylor and Inna opted for pseudonyms before revealing their identity later. In order to accompany the single, a music video was shot at a club in Neptun, Romania by Tom Boxer, and it initially did not feature Inna until another version of the visual showed footage of her in Turkey. Commercially, the recording experienced success in European countries, reaching the top ten of the charts in Greece, Russia, France and Romania, among others. In France, "Déjà Vu" has sold 15,400 registered copies as of 2010.

Initially, a version of the song featuring the vocals of Romanian singer Alessia was released in early 2009, and drew comparisons to Inna's "Hot" (2008) at that time. The track was further credited to Bogdan Croitoru, also known as Fizz, which opted for the pseudonym of Bob Taylor. However, following a dispute over compensation, the artists decided to quit their collaboration and Alessia demanded her vocals to be replaced with others, although "Déjà Vu" had already experienced commercial success in Romania and had been heavily played in night clubs. Particularly, the track was handed to Inna to re-record. According to Alessia, whose voice is a semi-tone higher than Inna's, the latter had a disadvantage when re-recording the song as it was not in her tonality, and this could not be changed because the track was already finished.

The new version of the dance single with Inna's vocals was initially made available for consumption as credited to Bob Taylor and Anni (backwards to Inna), as the artists wanted to "stay in the shade" reportedly because "the Romanian audience has some bias". Following a time of speculation and controversy, the performers of the recording were finally revealed, with Inna writing on her website; "I consider that a good song can be promoted and listened to without knowing by whom it is composed or who interprets it. With the help of 'Déjà Vu', I have showed this thing and, look, again, you – the audience – had the biggest intake. I thank you and don't forget that you are the only ones that can make a hit out of a song."

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