The cantus project, begun more than twenty years ago, provides observations about medieval musical sources for the Office and the melodies they contain in a web-based, freely available format. The record for a single chant has always contained information about the feast to which it belongs, its placement within that feast, its text, its mode and its appearance. Owing to the recent introduction of the music font Volpiano into cantus records, information regarding pitch is now also available. Wherever feasible, records now include melodic incipits encoded as strings of letters and dashes which appear as note-heads on a five-line staff in Volpiano font. Melodic incipits increase the appeal of cantus as a research tool.