When it comes to building suspense, nothing beats a drumroll.

So without further ado, we present details about this bangin’ weekend: Vice and JellyNYC (known for filling waterless pools with live bands) are producing a free, once-in-a-lifetime, 77-minute performance featuring 77 tribal/afro/break beat/jazzy/rocking/dub-fueled drummers, this Saturday (07/07/07) under the Brooklyn Bridge.

At the helm of the madness: the Boredoms, a 20-year-old avant-garde Japanoise rock band. They’ve asked NYC drummers to help create a cacophonic “live sculpture” called 77BoaDrum. Experimental? That’s an understatement.

About those sevens. In Japan, the digit represents a cosmic connection with the sun and its sound.

We suggest going early with six friends (to make seven), as Gang Gang Dance is warming up the crowd with a DJ set before unleashing the hyperactive army of slap-happy rhythmic freaks.

Beat that.

77BoaDrum, Empire-Fulton Ferry State Park, at Water Street, DUMBO. Saturday, July 7, at 4 p.m. For info and to R.S.V.P., go to viceland.com. To hear a track, go to vicerecordings.com.