All Stars Tour invading downtown

They sound like a needle-in-the-red grindcore troupe, a clutch of free jazz freakazoids and an anarchist electronica outfit all fighting for air inside a telephone booth. Iwrestledabearonce’s free-range extremity is every bit as breathless as their moniker suggests. They’re one of more than a dozen acts on the All Stars Tour, which doubles as the latest installment of the Rock the Block festivities downtown, where the coed button pushers will savage cochleas and genre designations alike alongside Emmure, Born of Osiris, Alesana and more. The fun starts at noon Sunday at the Free East Entertainment District, 500 Fremont St. Tickets are $22 in advance, $27 day of show.