ON THE TOWN: How many Polish punk-rock...

ON THE TOWN: How many Polish punk-rock authorities does it take . . . OK--no Polish jokes, right? But we’ve discovered a real Polish punk-rock expert, a 23-year-old fan from Gdansk named Yurich, who’ll spin (and interpret) the latest Polish punk and reggae underground hits Friday at 1 p.m. on KCRW-FM’s “The Roger Steffens Show.” “Yurich just dropped out of the sky--he literally showed up at my door in the middle of the afternoon,” Steffens explained. “He’s a fascinating kid. He speaks six languages, including German and Russian--and his English is better than mine. His music tapes are amazing. In Poland, you can’t perform unless you’re sanctioned by the government, yet all the songs are about tearing down the government. So we’ll play his tapes, with his translations.” . . . And congratulations to the Record Plant, which celebrated its 20th anniversary last week. The legendary recording studio opened in New York on March, 11, 1968. Its first occupant: Jimi Hendrix, who did a session there for his “Electric Ladyland” album. The Plant’s L.A. studios opened in 1969, and though the studio’s reputation as a chic recording spot has dimmed somewhat in recent years, it still is a favorite pit-stop for a wide variety of pop stars. Recent visitors have included Rod Stewart (working on a new album), Elton John (recording with a mariachi band), Maurice Jarre (scoring the upcoming film, “Guerrillas in the Mist”) and Eddie Murphey, who was there with producer Nile Rogers, doing vocals for a song slated to be part of the sound track to his upcoming film, “Coming to America.”