Improvisational-classical string quartet Tontine Ensemble released a new album. It’s nine compositions that entail the musicians exploring eruptive spontaneity amongst themselves, living up to the record’s title. There’s moments of profound suspense, frantic tension and calm between sonic storms with each track invoking the imagery suggested by its name; “Arachnid” gracefully motions like a spider in a web and “Unboxing” indeed sounds like the musicians are cutting through parcels. Tontine Ensemble create an ardent contemporary classical exhibition with “Fermen.”