Music involves so many levels of communication: verbal, audiovisual, emotional, even body language. In jazz, the spontaneity of improvisation ramps up the suspense and the excitement. And yet in the best situations, instant osmosis and mutual trust can inexplicably kick in. And that was what happened in 2013 with the meeting of Andreas Schaerer, the Berne-based vocal acrobat and multi-genre composer, with Zurich drummer Lucas Niggli. “We went on stage,” Schaerer remembers, “without any rehearsal beforehand, or even a discussion about what we would play - and yet it felt as if we had known each other for ages.” They then continued playing regularly as a voice-and-drums duo. Sometimes what resulted was quiet acoustic dialogues; at other times they would seek out the untrammelled, bombastic and loud