The album was subtitled: "A requiem for the post-war dream by Roger Waters, performed by Pink Floyd". Waters wrote all the album's lyrics and music. His lyrics were critical of the Conservative Party government of the day and mention Prime Minister Margaret Thatcher by name. At the time Gilmour did not have any new material, so he asked Waters to delay the recording until he could write some songs, but Waters refused. According to Mason, after power struggles within the band and creative arguments about the album, Gilmour's name "disappeared" from the production credits, though he retained his pay. "Rolling Stone" magazine gave the album five stars, with Kurt Loder describing it as "a superlative achievement" and "art rock's crowning masterpiece". Loder viewed the work as "essentially a Roger Waters solo album". Amidst creative differences, Waters left Pink Floyd in 1985 and began a legal battle with the band regarding their continued use of the name and material. In December 1985, Waters issued a statement to EMI and CBS invoking the "Leaving Member" clause in his contract. In October 1986, he initiated High Court proceedings to formally dissolve the Pink Floyd partnership. In his submission to the High Court he called Pink Floyd a "spent force creatively". Gilmour and Mason opposed the application and announced their intention to continue as Pink Floyd. Waters claims to have been forced to resign like Wright had been years earlier, and decided to leave Pink Floyd based on legal considerations, saying: "If I hadn't, the financial repercussions would have wiped me out completely." In December 1987, Waters and Pink Floyd reached an agreement. Waters was released from his contractual obligation with O'Rourke, and he retained the copyrights to the "Wall" concept and the inflatable "Animals "pig. Pink Floyd released three studio albums without him: "A Momentary Lapse of Reason" (1987), "The Division Bell" (1994) and "The Endless River" (2014). In 2005, Waters said of their almost 20 years of animosity: "I don't think any of us came out of the years from 1985 with any credit ... It was a bad, negative time, and I regret my part in that negativity." In 2013, he said he regretted the lawsuit, saying:  In 1984, Waters released his first solo album, "The Pros and Cons of Hitch Hiking", which dealt with Waters' feelings about monogamy and family life versus "the call of the wild".