Hidden Tapes is composed from old cassette tapes, with addition of some other sources from movies soundtracks and classical or liturgical music extracts which were retrieved in closets. These sound documents were accelerated or slowed down, layered and transformed with analog devices. No digital effect, no plugin. Computer was only used for editing and mixing. Composed on 2013. About Marc Baron : Between 2000 and 2010, Marc Baron was an improviser on saxophone. He made concerts and performances in solo or ensembles (mainly duo Narthex, quartet Propagations). Concerts in France, Italy, Switzerland, Portugal, Australia.Collaborations with Loïc Blairon, Seijiro Murayama, Jean-Luc Guionnet, Jean- Sébastien Mariage, Bertrand Denzler, Pascal Le Gall and Stéphane Rives. Since 2010Êhe works as a composer for speakers: sound diffusion, installations, live performances.ÊPerformances in festivals: 104, Umlaut and Parisonic (Paris), Villa Savoye (Poissy), Mulhouse. Now, now (Sydney, Australia), Parisonic (Melbourne, Australia).