The term refers to compilations of lead sheets, containing simplified musical notation for popular holiday songs, readily available in a portable document format without cost. These resources typically include melody lines, chord symbols, and lyrics, enabling musicians to quickly learn and perform Christmas standards. As an example, a pianist might utilize such a file to accompany carolers at a seasonal gathering.
These downloadable music collections offer numerous advantages. They provide economical access to a wide repertoire, allowing musicians to expand their performance options without significant financial investment. Furthermore, the digital format allows for convenient storage, searchability, and portability across various devices. Historically, similar collections have existed in physical form, but the modern digital incarnation allows for easier distribution and accessibility.