In July 1978, Pink Floyd reconvened at Britannia Row Studios, where Waters presented two new ideas for concept albums. The first was a 90-minute demo with the working title "Bricks in the Wall". The second was about a man's dreams across one night, and dealt with marriage, sex, and the pros and cons of monogamy and family life versus promiscuity. The band chose the first option; the second eventually became Waters's first solo album, "The Pros and Cons of Hitch Hiking" (1984).