This CD ( a 2003 enhancedCD re-issue by East Side Digital ) is a nice introduction into analog synthesis by the American synth pioneer Wendy Carlos
Secrets of Synthesis ( originally from 1987 ) is a lecture by Carlos with her own audio examples. The main topic is 'Electronic Orchestration' - the use of analog ( and digital ) synthesizers in ways that orchestral instruments sound.
Some of the audiotracks are an introduction to synthesis, and some of it is aimed at the more experienced musicians.
A great tutorial CD in my opinion, with some very good information and great and usefull insights.
One short soundexample: Secret of Synthesis, discussion with musical examples ~ Introduction
01 Secret of Synthesis, discussion with musical examples~Introduction by NetPierre
Wikipedia: Wendy Carlos
Ordernr: East Side Digital ESD 81702 or ESD 81692