VSL Special Edition Collection Vol. 1 License, Orchestra Library, The Essential Orchestra includes 28 solo and ensemble instruments, includes the most common instruments and articulations, staccato, détaché, sustained, sforzato, tremolo, pizzicato, legato, portamento, Solo- and Orchestral-Strings, Brass, solo und ensemble, Woodwinds, from Piccolo to Contrabassoon, Harp, Drums und Orchestral Percussion, Boesendorfer Imperial Grand Piano, Celesta, Glockenspiel, Marimba and Vibraphone, Real Legato Performance Samples for real note transitions, 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)