Invisible Cities Opens to Sell-Out Performances at Los Angeles' Union Station as Sennheiser Technology Enables 'Artistic Creation Without Borders'

City of Los Angeles Issues Proclamation to Invisible Cities as Sennheiser Delivers Highly Personalized, Yet Communal Artistic Experience to Consumers Los Angeles – October 25, 2013 – Invisible Cities, the world’s first large scale opera for wireless headphones, opened to critical acclaim on October 19th at the iconic Union Station, where it was issued a [...]