translator and writer who had been working in Prague, to teach the band the lyrics of the American songs they covered and translate their original Czech material into English. Wilson was the band's lead vocalist from 1970 to 1972. During this time, the group's repertoire drew heavily on songs by the Velvet Underground and the Fugs. The only two songs sung in Czech in this period were "Na sosnové větvi" and "Růže a mrtví", both of whose lyrics were written by Czech poet Jiří Kolář. Because the band was not permitted to record their music, fans circulated bootleg copies of concert material, remastered versions of which were released many years later, under the titles Muž bez uší (2002), Vožralej jak slíva (1997), Do lesíčka na čekanou (2006), Trouble every day (2002), and Ach to státu hanobení (2000). After Wilson left, PPU drew from the poet Egon Bondy, whose work had been banned by the government. In the following three years, Bondy's lyrics almost completely dominated PPU's music. In December 1974, the band recorded their first studio album, Egon Bondy's Happy Hearts Club Banned (the title being a play on the Beatles' Sgt. Pepper's Lonely Hearts Club Band), which was released in France in 1978. Persecution, trial, and aftermath: 1974–1988 In 1974, thousands of people traveled from Prague to České Budějovice to see the Plastics perform. Stopped by police, they were sent back to Prague, and several students were arrested. The band was forced underground until the Velvet Revolution, in 1989. Unable to perform openly, an entire underground cultural movement formed around them during the 1970s. Sympathizers of the movement were often called máničky, a term referring to men with long hair during that era. In 1976, the Plastics and other people from the underground scene were arrested and put on trial (after performing at the Druhý festival druhé kultury event) by the Communist government, in order to set an example. They were convicted of "organized disturbance of the peace" and sentenced to prison terms ranging from eight to eighteen months. Paul Wilson was deported, despite having left the band in 1972. Other artists who also suffered arrest and persecution following this event included Pavel Zajíček, Svatopluk Karásek, and František Stárek. After being released from prison, the Plastics continued to make music. In response to their persecution, they recorded a number of compositions, which were compiled on the album Kolejnice dúni,