Harmonik – Accordion Mics – First impressions by Romano Viazzani- In August 2017 Beltrami Accordions fitted my stalwart Beltrami CVP7, which I use fall all kinds of work, with a new microphone system designed for accordion by Harmonik of Brazil. They cost a bit more than most accordion mics but are well worth the spend, particularly if you are a professional doing all manner of work which includes work where amplification is necessary.