ITMI, which stands for "Indici della trattatistica musicale italiana" (or Indices of Italian Musical Treatises), is a systematic repertory of indices drawn from the review of over 1200 treatises on music theory written between the 14th and the 18th centuries. The project, conceived and organised by Piero Gargiulo, is based at the Sezione Musica where it is fully integrated into the scientific programme, including the «Répertoire International des Sources Musicales» (RISM).