The trio are part of an all-star writing cast for the album The Performance - Bassey's first studio set in more than 20 years - which will be released by Geffen Records on November 9.
The album's producer David Arnold, who has himself co-written two of The Performance's songs, was also at the launch alongside record company representatives such as Geffen UK president Colin Barlow and selected media.
Others attending included veteran lyricist Don Black who wrote No Good About ...
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