Question: Ben Liebrand has remixed tracks by what English singer whose 1987 song "Never Gonna Give You Up" was a number 1 hit single in 25 countries?
Sentence (from "Sylvain Cossette"): The 70s concert tour went Silver Ticket (25,000 tickets sold) in three months and Gold Ticket (50,000 tickets sold) within a year.
Relevant evidence: No