Karla Hartl is founder and chair of the Kapralova Society, a Canadian music society based in Toronto, Canada, dedicated to promoting Czech composer Vitezslava Kapralova and other women in music. Hartl's research on Kapralova has been published in the Kapralova Society Journal which she co-edits with Eugene Gates, a retired faculty member of the Royal Conservatory of Music in Toronto. Her articles have also appeared in Tempo (Cambridge University Press), Journal of the IAWM (International Alliance for Women in Music), VivaVoce (Frau und Musik), Czech Music Quarterly (Czech Music Fund), Journal of Czech and Slovak Music (The Dvorak Society of Great Britain), Martinu Revue (Bohuslav Martinu International Circle), Opus musicum, Harmonie, Tydenik Rozhlas (Czech Radio), and FOKus (Prague Symphony Orchestra). Hartl is co-editor of the first monograph on Kapralova in English, The Kapralova Companion, published by Lexington Books (Rowman & Littlefield) in the United States in 2011 and shortlisted for the 2011 F.X. Salda Foundation Award. She collaborated on a five-hour radio documentary on Kapralova produced by the BBC Radio 3 for the composer's centenary in 2015, wrote an introductory chapter in a collective monograph on Kapralova, published by Chronos Verlag (Zurich) in 2017, and edited a multi-volume collection of Kapralova's correspondence (published by The Kapralova Society between 2015 and 2020). Hartl is author of Thematic Catalogue of Kapralova's Works, published by Czech Radio in December 2020, and Kauza Kapralova (The Kapralova Case), published by Nakladatelstvi Klic in June 2021. Her latest project is a women in music anthology, which she co-edited with Eugene Gates. The book was published by The Kapralova Society in November 2021.