Big party at Dracula’s castle last night, were you there? Alone in a darkened room, The Count? Not exactly. While not quite the mobscene that the NY Gypsy Festival’s show at le Poisson Rouge was last month, the big Balkan brass band concert last night was well-attended and deliriously fun. It was something of a juxtaposition of the old guard and the young lions of the thriving but still largely under-the-radar New York Balkan underground. The dancing started before the bands did, the dj spinning an auspiciously diverse, pan-global mix of Mehanata-style stuff while a line formed and circled the room, growing longer by the minute. Then Zlatne Uste took the stage. The nine-piece Balkan brass juggernaut – four horns, trumpet, tuba, drum and two saxes – were the first of the New York Balkan brass bands, dating from way back in 1983. Their name means “golden lips,” definitely a boast, but they back it up. “Most of us are older than you are,” their trumpeter somewhat proudly told the crowd. A guy in the crowd kept yelling for them to play his favorite song, the Goran Bregovic hit Kalasjnikov. “Not now!” a fellow partyer grinningly advised. “They always do that later.”

They opened with their darkest number of the night, basically a murky two-chord chromatic dance vamp and then another that was even simpler, serving as a chassis for some darkly intense soloing from the trumpet and sax. Most of the songs were instrumentals, although several band members sang on the vocal numbers, sometimes sharing a line or trading off.  A few were marked by a noticeable shift, opening somewhat wary, the staccato pulse of the horns then growing bouncier and more carefree. As their long, exuberant set went on, the sea of dancers grew, through a bouncy, happy number in 4/4, a bracingly soulful cocek dance and several with far trickier, syncopated rhythms that didn’t phase the dancers a bit. One of the guys in the band sang a drinking song (rakia, the potent Balkan apple brandy featured prominently). The crowd – a diverse mix of expats and Americans – was clearly psyched to hear what were obviously some old favorites. As predicted, they finally did Kalasjnikov, a lickety-split vocal number, one of the horn players leading the crowd in an exuberant “one, two, three, OPA!” to wind up the chorus.

After a lengthy break, Raya Brass Band came out of the back room and secured a spot on the floor, quickly encircled by not one but two lines of dancers. There’s been a buzz about this band lately and it’s well-deserved. Where Zlatne Uste got the party going, these guys took it up a notch. Their sound is looser, far darker and they threaten to fly off the hinges at any second: this band is all about adrenaline, taking the intensity as high as it can go and then adding something on top of that. Clarinetist and sax player Greg Squared – also of the equally intense, somewhat more diverse Ansambl Mastika - is a pyrotechnic player in the Ivo Papasov mold, delivering an endless series of long, careening, wildly flurrying clarinet solos packed with lightning-fast melismas. On the sax, he backed off only a little. Yet it was his achingly terse, minimalist clarinet solo toward the end of the set that was the most intense of all. Trumpeter Ben Syversen is a kindred spirit, blazing through the songs’ eerie Middle Eastern scales while accordionist Matthew Fass (also of Zagnut Cirkus Orkestar) held things together as much as he could, ominously and atmospherically. Sometimes the band would all blast through the same repetitive riff as an ensemble, otherwise barrelling along with the fat, undulating groove of the tuba and drum as trumpet, sax or clarinet cut loose, the songs going on for minutes on end without respite. Eventually, two of the women from the Brooklyn Balkan a-capella quartet Black Sea Hotel (who have a sensationally good debut album just out) joined in and belted a few choruses

By 2 AM, the drunk munchies were kicking in, and the kitchen was still serving food. By the way, these NY Gypsy Festival events are a surefire way to get away from tourists and trendoids. Tourists, if they knew this stuff existed, would think it’s weird and scary (a lot of it is); trendoids, if they knew anything about it, would ridicule it as declasse. There’s nothing more populist than when the band is on the dancefloor and either you’re in the band or you’re unable to escape being drawn into the joyous vortex of dancers around them.

Raya Brass Band is at Mehanata on 6/25 at 9; the 6/27 Turkish Woodstock at Central Park Summerstage at 3 featuring Mazhar-Fuat-Özkan, Painted on Water with Sertab Erener & Demir Demirkan plus the NY Gypsy All-Stars with iconic clarinetist Hüsnü Senlendirici is not to be missed, and afterward the organizers have kept things going with an afterparty at City Winery, Senlendirici playing with the Brooklyn Funk Essentials and more from the Gypsy All-Stars. Is this turning out to be a good summer or what?