It’s been 19 years since British Art Rock giants Radiohead did their first tour of the U.S. This Tuesday, Radiohead finally finds time to perform in Cincinnati, bringing its tour behind last year’s Grammy-nominated album The King of Limbs to Riverbend Music Center. If there’s any band worth waiting that long for, it’s Radiohead. The world’s biggest avant garde group is also one of the best live acts on the planet, playing with a fervent intensity backed by a dazzling light/stage show.The group’s two-hour-plus sets of late have been heavy on Radiohead’s “post Pop” albums, though they often treat fans to “oldies” like “Karma Police” and “Paranoid Android.” If you are even the remotest fan, you need to see Radiohead once in your lifetime. You don’t want to wait another 19 years, do you? The show starts at 7:30 p.m. with a set by Electronic/Indie act Caribou. $26.50-$66. Tuesday June 5. Riverbend Music Center. 6295 Kellogg Ave., California. riverbend.org.