Provides instruction on three important tasks that early music performers often undertake in order to make their work more noticeable and appealing to their audiences. First, the book provides instruction on using early sources - manuscripts, prints, and treatises - in score, parts, or tablature. It then illuminates priorities behind basic editorial decisions - determining what constitutes a 'version' of a musical piece, how to choose a version, and how to choose the source for that version. Lastly, the book offers advice about arranging both early and new music for early instruments, including how to consider instruments' ranges and various registers, how to exploit the unique characteristics of period instruments, and how to produce convincing textures of accompaniment.