The 29th edition of the Art Brussels opens in the Belgian capital this week, from April 28 through May 1. The fair features a roster of international galleries, some of which were prevented from attending the 2010 edition by the eruption of Iceland's breezily-named Eyjafjallajökull volcano. A few preview highlights for those who will be visiting the city:

– Paris-based Air de Paris splits a booth with Berlin's Esther Schipper to spotlight four artists shared by both galleries (Liam Gillick, Carsten Holler, Ann Veronica Janssens, Philiipe Parreno), as well as Air de Paris's Rob Pruitt and Claire Fontaine, and Esther Schipper's Matti Baun and Gabriel Kuri. The focus throughout is on new work — and the color black.

– Galerie Templon brings a work by Ivan Navarro, "Reality Show" (2011), described as a telephone booth/elevator inside of which one is "surrounded by infinite tunnels of light." (Navarro, after his brilliant electric fence at the Armory Show, is clearly vying to be the official showstopper of international art fairs.) The gallery also shows work by Jonathan Meese, Norbert Bisky ("a new monumental painting combining disasters and erotica"), He An, and others.

View Slideshow: Art Brussels 2011 Fair Preview

– Brussels' Twig Gallery brings work by Susan Hefuna, Michael Samuels, Alex Brown, and Mischa Kuball, along with a spotlight on Nathaniel Robinson, a New York-based sculptor who does inventive things with gypsum cement and polyurethane resin.

– The U.S. is well represented, with galleries like New York's Lisa Cooley, Yvon Lambert, and Eleven Rivington attending, along with Honor Fraser and Cherry & Martin from Los Angeles. The latter gallery is bringing pieces by Modern Painters' favorites Nathan Mabry and Amanda Ross-Ho, among others.

– Amsterdam's excellent Grimm Gallery is showcasing a group of Brooklyn-based American artists: Nick van Woert, Matthew Day Jackson, Dave McDermott, Adam Helms, and Larry Bamburg.

– Berlin's Peres Projects is focusing their booth on new cement and glass sculptures by Kirstine Roepstorff, with additional work from Joe Bradley and Mark Flood.

– London's Simon Lee Gallery is showing Angela Bulloch, Larry Clark, George Condo, Matias Galdbakken, Bernard Frize, and Sherrie Levine, among others. "We have seen the development of Art Brussels since our first participation in the fair when the gallery opened, and we are looking forward to returning this year," Lee says. "The fair has a unique atmosphere — collectors here are very serious, considered and thoughtful and we always enjoy the engagement we have with them."

– After taking a break for a few years, Brussels' Zeno X Gallery is returning to the fair. They bring Marlene Dumas's 2010 portrait "Like Sadam," plus work from Mark Manders, Michaël Borremans, Luc Tymans, Kees Goudzwaard, Bart Stolle, and many others.

– Also from Brussels, the gallery Sorry We're Closed seems intent on sowing nightmares with "The Big Clown Show." The clown-centric offerings include work by Cindy Sherman, George Condo, Hans Peter Feldman, Gert and Uwe Tobias, Jeff Koons, and many others. "'The Big Clown Show' has a very Belgian aspect, its own characteristic, farcical humor," says gallery co-owner Sébastien Janssen. "I don't know if I will sell any of those crazy clowns, but I do know that it will be a big surprise for all the visitors."