For 10 years, Oberon – the American Repertory Theater’s second performance space in Cambridge – was known to locals and visitors alike for “The Donkey Show,” a disco rendition of Shakespeare’s “A Midsummer Night’s Dream.” The show closed in 2019, and in 2021, Oberon shuttered, too. Now, a new venue called Arrow Street Arts is taking over the existing space, and it’s kicking off its grand opening in a big way with Arrowfest, a 10-day arts festival showcasing local actors, musicians, dancers, circus performers, puppeteers and more. We speak with Arrowfest’s lead curator and two performers debuting a new work at the festival.