The Inversion Hotline Song
DOI:
https://doi.org/10.15763/issn.2994-7073.2026.39.%25pKeywords:
Inversion Hotline, Akira SatoAbstract
This is a song to help remember the inversion symbols in Roman numeral notation. As a memory device, the inversion symbols are summarized in the form of a phone number called the Inversion Hotline.
Composed/Sequenced/Performed by: Akira Sato Boomwhacker Trio: Addison Sato (11), Kim Sato, Akira Sato Otamatone Solo: Addison Sato (11).
This video is available at https://www.youtube.com/watch?v=iEEOCpi5lhA.
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Copyright (c) 2026 Akira Soto (Author)

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.