Register for Prelude Join fellow ensemble leaders for a complimentary professional development experience created by musicians, for musicians. Before you register Each organization may reserve a maximum of two spots. Prelude is complimentary for qualifying ensemble leaders and one guest when their group meets Encore’s minimum international passenger requirement. We will confirm your eligibility and notify you of any additional costs. Bringing a guest? Please complete the separate companion registration form. Registration deadline: Please submit all registration forms by October 1. Prelude Registration Form Notice: JavaScript is required for this content.