The Opera Omnia of Giovanni Battista Riccio present the composer’s complete works in a critical edition. Each volume includes one or more introductory essays, a description of the original print, a critical apparatus of texts and music, and the musical edition. The volumes are available both in print and as full-text PDF editions on the publisher’s website, Musica Iagellonica. Incomplete works are published both in their original incomplete form (also available for download as editable MusicXML files) and in a version supplemented by a scholarly reconstruction of the missing parts.