Research is still underway to answer basic questions such as how many lyra viol lessons currently exist; how many compositions can be ascribed to any one composer; and can we identify the composer of anonymous lessons. To that end, Gordon Dodd published "The Thematic Index of Music for the Viola da Gamba." This online index is a massive database that can only be searched by visually examining this multi-authored index. The database is not limited to lyra viol lessons. The database encompasses all historic music for viola da gamba. The Index is hosted by the Viola da Gamba Society of Great Britain.