Stevie Nicks, who had been ambivalent about committing to a new record. 2016–2017: Lindsey Buckingham Christine McVie and Classic Concerts In August 2016, Fleetwood said that while the band has "a huge amount of recorded music", virtually none of it features Stevie Nicks. Buckingham and Christine McVie, however, had contributed multiple songs to the new project. Fleetwood told Ultimate Classic Rock, "She [McVie] ... wrote up a storm ... She and Lindsey could probably have a mighty strong duet album if they want. In truth, I hope it will come to more than that. There really are dozens of songs. And they're really good. So we'll see." Buckingham and Christine McVie announced a collaborative studio album titled Lindsey Buckingham Christine McVie, which also features Mick Fleetwood and John McVie. The album was originally planned as a Fleetwood Mac album. Stevie Nicks did not participate due to her preference for a solo tour with the Pretenders. Lindsey Buckingham/Christine McVie was released on June 9, 2017, and was preceded by the single, "In My World". A 38-date tour began on June 21, 2017, and ended on November 16. 2018–present: Firing from Fleetwood Mac, Solo Anthology, and Lindsey Buckingham Following Fleetwood Mac's performance at the MusiCares Person of the Year in January 2018, Buckingham was fired from the band. The reason was said to have been a disagreement about the nature of the tour, and in particular the question of whether newer or less well-known material would be included, as Buckingham wanted. Mick Fleetwood and the band appeared on CBS This Morning on April 25, 2018, and said that Buckingham would not sign off on a tour that the group had been planning for a year and that they had reached a "huge impasse" and "hit a brick wall". When asked if Buckingham had been fired, he said, "Well, we don't use that word because I think it's ugly." He also said that "Lindsey has huge amounts of respect and kudos to what he's done within the ranks of Fleetwood Mac and always will." In October 2018, Buckingham filed a lawsuit against Fleetwood Mac for breach of fiduciary duty, breach of oral contract and intentional interference with prospective economic advantage, among other charges; the lawsuit was settled in December of the same year. Buckingham stated he learned about the firing after receiving a call from Fleetwood Mac manager Irving Azoff with a message