A metre-long cross between a piano and electric guitar, the harpejji is earning famous fans and millions in revenue. But can ‘chaos bells’ or an abacus-powered synth do the same?
Moog & inMusic: A New Chapter of Innovation and Collaboration Begins twice.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from twice.com Daily Mail and Mail on Sunday newspapers.