Rio appears (sings/talks) in the following CD singles.

2020.04.08	The Idolm@ster Shiny Colors Gr@date Wing 01 (LACM-14982)	Song
2020.09.16	The Idolm@ster Shiny Colors Gr@date Wing 07 (LACM-24005)	Song
2021.04.14	The Idolm@ster Shiny Colors L@yered Wing 01 (LACM-24111)	Song
2021.10.13	The Idolm@ster Shiny Colors L@yered Wing 07 (LACM-24117)	Song
2022.04.13	The Idolm@ster Shiny Colors Panor@ma Wing 01 (LACM-24251)	Song
2022.10.12	The Idolm@ster Shiny Colors Panor@ma Wing 07 (LACM-24257)	Song
2023.09.13	The Idolm@ster Shiny Colors Canvas 06 (LACM-24366)	Song
2023.10.18	Shiny Colors Song for Prism Hoshi no Koe (LACM-24437)	Song
2024.04.03	Shiny Colors Song for Prism Aozora (LACM-24526)	Song
2024.04.03	Shiny Colors Song for Prism Hanamuke no Hanataba (LACM-24525)	Song
2024.10.09	The Idolm@ster Shiny Colors Echoes 06 (LACM-24546)	Song
2024.11.20	Shiny Colors Song for Prism C'mon! Join Us (LACA-25133)	Song
2024.11.27	Shiny Colors Song for Prism Goodbye (LACM-24629)	Song
2024.11.27	Shiny Colors Song for Prism Heads or Tails? (LACM-24628)	Song
2025.01.22	The Idolm@ster Shiny Colors Echoes 09 (LACM-25115)	Song