Spitfire Audio Ólafur Arnalds Cells (ESD); virtual string library; modern orchestral instrument combining emotive strings and analog synths; co-developed with Ólafur Arnalds; performed by SinfoniaNord and recorded at Hof Cultural Center, Iceland; features useful functions like Scale Mode and Played Mode for developing musical ideas in real-time; designed for inspiration and harmonic randomness; includes AIR Studios reverb; built on Spitfire's eDNA engine; comes in dedicated Spitfire plugin; over 200 curated presets; scalable user interface;