FOUR-TIME Grammy winner Sam Smith has recorded the theme song for the upcoming James Bond movie “Spectre.”

    The track is called “Writing’s on the Wall” and will be released Sept. 25.

    Smith said, “This is one of the highlights of my career.

    “I am so excited to be a part of this iconic British legacy and join an incredible lineup of some of my biggest musical inspirations.”

    Just last week, Smith told BBC Radio 2’s Jo Whiley he was “definitely not” working on the project.

    But, revealing his involvement Tuesday, he told the BBC, “I’m so relieved to actually talk about this, this has been a top secret mission of my own.”

    He said he recorded the track in January.

    “I got called into the office with Barbara Broccoli and Sam Mendes and they gave me the script, I read the script ... they said ‘have a go at the song.’

    “It’s the quickest I’ve ever written a song — it took 20 minutes ... and they loved it!”

    “I love the song so much,” he added.

    Smith has co-written the title song with fellow Grammy award winner Jimmy Napes, who worked with him on the number one hits “Stay With Me” and “La La La.”

    Dance act Disclosure — who gave Smith his big break on the single “Latch” — tweeted that they had “added some additional production” to the song.

    It is the first James Bond theme song recorded by a British male solo artist since 1965.

    It also features Oscar winner Christoph Waltz, David Bautista and “Sherlock” star Andrew Scott.

    Adele’s Bond song, “Skyfall,” won her an Oscar in 2013.

    Ellie Goulding, Radiohead and Lana Del Ray had also been rumored to record the “Spectre” theme song.

    Goulding had heavily hinted her involvement in the production with a picture posted on Instagram in July. The picture showed the singer leaving the world-famous Abbey Road Studios with the caption, “It’s a wrap.”

    She also tweeted the title of the 1973 Bond film “Live and Let Die.”

    Abbey Road was the same studio Adele used for the “Skyfall” theme.

    (SD-Agencies)