They band - whose biggest album, 'Rumours', has sold more than 40million copies – are back on the road with two new songs, but Nicks isn't sure if they will make another album.
Nicks recently sang on tracks that bandmates Lindsey Buckingham, Mick Fleetwood and John McVie worked on, calling the sessions "great", although she admitted she wasn't sure where the band fits in today's music industry.
"Whether or not we're gonna do any more (songs), we don't know because we're so completely bummed out with the state of the music industry and the fact that nobody even wants a full record," she told AP. "Everybody wants two songs, so we're going to give them two songs."
The band said the response to the new tracks during their 34-city North American tour - which Buckingham calls "the most Fleetwood Mac-y stuff ... in a long time" - would determine whether more material would come.
"Maybe we'll get an EP out of it or something," Buckingham said.
The group are celebrating the 35th anniversary of their best-selling 'Rumours' album.
Buckingham said he initially wanted to record a new album, but Stevie "wasn't too into that". But the guitarist and singer knows that new music isn't a priority for the band's fans.
"It wouldn't matter if they didn't hear anything new. In a way there's a freedom to that - it becomes not what you got, but what you do with what you got. Part of the challenge of this tour is figuring out a presentation that has some twists and turns to it without having a full album," he said.