Actually, Spotlight Strings started out as "Solo Strings 3" back in 2008. I was experimenting with Kontakt's LFO abilities to simulate string vibrato. This was due to the fact that I wanted to be able to have the user manipulate vibrato in any way so as to suit his or her needs. At that time, it seemed there was really no way to realistically alter vibrato speed, intensity or fade-in time in real time by merely using samples and crossfading. So LFO manipulation seemed to be the solution. And also at that time, it seemed to me that there was just no convincing way to simulate a good string player's vibrato using Kontatk's LFO's back then. It was ok, but not good enough.