British Recording artist Sam Smith recorded the theme song for the 2015 James Bond film Spectre.

“This is one of the highlights of my career,” British singer songwriter Sam Smith tweeted today of performing the theme for the new James Bond film, Spectre.

Called “Writing’s On the Wall,” Smith let slip in a January BBC Radio 1 interview that he’d recorded the song, then tried his best to bury the news after apparently being slapped back by the fact that the deal hadn’t been signed.

“I am honored to finally announce that I will be singing the next Bond theme song,” he shared via tweet.

“This has been a top-secret mission of my own, trying to keep it a secret,” he told the Radio 1 interviewer in January. Today, he was singing a different tune. “I’m so relieved to actually talk about this!” he noted.

The “Writing’s on the Wall” single will be released September 25, with the film, starring Daniel Craig and directed by Sam Mendes, with a score by Thomas Neuman, is out November 6.

Smith said wrote the with Jimmy Napes, collaborator on his biggest hit to date, “Stay With Me.” “I got called into the office with (film producer) Barbara Broccoli and (director) 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!”

Though sometime they’ll  heat seek the hot artist of the moment, the Bond producers will also entice multiple artists to take their best shot at a theme, choosing the best one.

Paul McCartney and Wings (1973’s Live and Let Die), Duran Duran (1985’s A View to a Kill), Madonna (2002’s Die Another Day) and Adele (2012’s Skyfall, for which she won the Oscar for Best Song) are just some of the contemporary artists that have been immortalized in Bond lore and pop culture with theme songs.

“I am so excited to be a part of this iconic British legacy and join an incredible line up of some of my biggest musical inspirations,” Smith subsequently tweeted.

Smith called “Writing’s On the Wall” a “classic love song.” He becomes the first British male solo artist to record a Bond theme since 1965, when Tom Jones performed the title track for Thunderball. The franchise started in 1962 with Dr. No.

Smith, whose song style is said to “hearken back to the classic American soul balladeers of the 1960s,” won four Grammy Awards in February: Best New Artist, Best Pop Vocal Album and Song and Record of the Year.