FOR REVIEWS of my 'Sound Foundations' 'Audio Engineering Reference Guide' and 'Optimal Reaper', along with 'Planned Abundance' and 'Convergences', and 'The Mystery of The Dreamer and The Dream', use this link: https://www.amazon.com/gp/search/ref=sr_gnr_fkmr1?rh=i%3Aaps%2Ck%3AMarkus+Heinrich+Rehbach&keywords=Markus+Heinrich+Rehbach&ie=UTF8&qid=1542635462