The 49-year-old singer, who announced in May that she would be releasing a new album soon, took to Twitter to share the song clip, reported Entertainment Weekly.
"I want to tell you how important you are to me! Love J. #ConversationsInACafe," she tweeted.
This will be Janet's first album since "Discipline" in 2008. "Conversations in a Cafe" is most likely the title of her album.
The "Rhythm Nation" hit-maker also announced the first set of dates for her upcoming Unbreakable World Tour, which will start on August 31 in Vancouver.