During the Soviet times, popular music also produced a number of renowned figures, such as the two balladeers—Vladimir Vysotsky and Bulat Okudzhava, and performers such as Alla Pugacheva. Jazz, even with sanctions from Soviet authorities, flourished and evolved into one of the country's most popular musical forms. The Ganelin Trio have been described by critics as the greatest ensemble of free-jazz in continental Europe. By the 1980s, rock music became popular across Russia, and produced bands such as Aria, Aquarium, DDT, and Kino. Pop music in Russia has continued to flourish since the 1960s, with globally famous acts such as t.A.T.u.. In the recent times, Little Big, a rave band, has gained popularity in Russia and across Europe.