1.0JeopardyAnswers.orghttps://jeopardyanswers.orgjeohttps://jeopardyanswers.org/author/jeo/Previously he had built theremins but in 1964 introduced his first synthesizer - JeopardyAnswers.orgrich600338<blockquote class="wp-embedded-content" data-secret="9txfBp5Edn"><a href="https://jeopardyanswers.org/previously-he-had-built-theremins-but-in-1964-introduced-his-first-synthesizer/">Previously he had built theremins but in 1964 introduced his first synthesizer</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://jeopardyanswers.org/previously-he-had-built-theremins-but-in-1964-introduced-his-first-synthesizer/embed/#?secret=9txfBp5Edn" width="600" height="338" title="“Previously he had built theremins but in 1964 introduced his first synthesizer” — JeopardyAnswers.org" data-secret="9txfBp5Edn" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); </script> Below you may find the Previously he had built theremins but in 1964 introduced his first synthesizer which is part of the Jeopardy Archive. In case the question or answer is wrong or something is missing do not hesitate to contact us and we will be glad to help you out. This question was last...