VSL Special Edition Bundle Core License, Orchestra Library, includes Special Edition Collections Vol. 1-4, all instruments, but except extended articulations of the PLUS volumes: Special Edition Vol. 1 - Essential Orchestra, Special Edition Vol. 2 - Extended Orchestra, Special Edition Volume 3 – Appassionata & Muted Strings, Special Edition Volume 4 – Special Winds & Choir, Sample Player "Vienna Instrument" included, intelligent detection of your performance, eLicenser (VSL, Steinberg, Syncrosoft) required for product activation (not included), content: software license plus Media-Pack (USB stick including all installation files), Windows 7 or higher, Mac OSX 10.7 or higher, Formats: Stand-Alone, AU/VST/AAX Native/RTAS (requires Pro Tools 7.3 or higher)