The primary data contains the original recordings (wav files), derived files, and annotations. The primary data is subjected to an embargo and not in the public domain. The secondary data contains the analysis of the primary data to derive the graphics and statistical analyses in the publication. Please check the READ_ME.txt file for further information about file content. The datasets were created as part of the project SoundAct which has received funding from the European Research Council (ERC) under the European Union’s Horizon Europe research and innovation programme (grant agreement No. 101053194). Data to: Cunha, Conceição; Kanana, Fridah und Harrington, Jonathan (2023): Variation and palatalisation in the production of the plural prefix in Meru: a study of three dialects. 20th International Congress of Phonetic Sciences, Prague, August 7–11, 2023. DOI: https://doi.org/10.5282/ubm/epub.104991.