Supplementary material for the ISMIR2020 paper titled: " Sesquialtera in the Colombian bambuco: Perception and estimation of beat and meter". The data in this repository includes the audio files, transcriptions and annotations of the 10 bambucos used in the study. This work was conducted in the context of the ACMus project. You can find more information about our project here. For more information about ACMUS-MIR, our annotated dataset of Colombian music from the Andes region, you can visit our website and our zenodo repository.