Lead synths are always in the sonic spotlight. This makes their sound design elements extremely crucial. Multiplier, AKA Adam Pollard, gets you the inside data for creating killer lead synth sounds in this 25-tutorial course.
Native Instruments' Razor is a totally slick additive synthesis machine. See all the different ways you can slice this knife of a synth into your tracks in this 40-plus video tutorial by expert synthesist G.W. Childs...