EastWest Opus engine is a premium sample playback engine used for high-end virtual instruments, most notably the Hollywood Orchestra Opus Edition
: Offers several free instrument collections, such as the Helix strings, available through their SINE Player. Opus Vst Free Download
EastWest offers a of the Opus software and Hollywood Orchestra. No credit card is required for the trial, but you do need to create an account and install the EastWest Installation Center. EastWest Opus engine is a premium sample playback
Visit the official EastWest website (soundsonline.com) and sign up for a free user account. such as the Helix strings