This database offers all the 'cantigas' (songs) contained in the medieval Galician-Portuguese 'Cancioneiros' (songbooks), the manuscripts' images and also the music (either medieval or the contemporary versions or original compositions which take the texts of medieval songs as a starting point). It also includes brief information about all the authors included in it, of the characters and places mentioned in the songs, as well as the "Arte de Trovar", the little poetic treaty on troubadours’ art that opens the “Cancioneiro” of the Portugal National Library. The edited text of the songs also gives access to a set of information meant to make easier both their reading or their historical background (glossary, verses’ notes, toponymy, references to people, general notes). It also provides some basic information on its formal aspects. In each song, the edited text can be confronted with the original handwritten text, and a number of notes justificatory of the proposed readings can be found as well (reading notes). The database displays a lot of images related to the 'Cantigas'. It allows a sequential reading of the songbook's folios, as well as independent view of the miniatures included in Cancioneiro da Ajuda. Regarding the music, the database allows you to play audio files and read the respective musical scores (when available) and includes brief information on composers, editors and interpreters.