This is an article about the Tone Rion software for the VOCALOID4 engine.


On December 28, 2016, Tone Rion and a new VOCALOID were announced for the VOCALOID4 Engine with a projected release date of February 16, 2017.[1] It was also confirmed that Nemu Yumemi was the voice provider for both VOCALOIDs.[2]

Tone Rion V4 did not receive any demos prior to her release.

Product InformationEdit



Voicebank LibrariesEdit

Product Information
  Optimum Tempo: 60 ~ 140BPM  Optimum Range: A2 ~ F4
  Total Tempo (min-max): 80BPM  No. of Keys: W=13, B=8, Total=21
  Trial/Demo Vers?: No  Starter Available?: No
Package details
This is the updated version of the VOCALOID3 vocal and maintains the same nasally tone as the V3 version.

An upgrade was offered for owners of the older VOCALOID3 version of Tone Rion

Vocal traits as noted:
  • GWL added.
  • Other than access to GWL and XSY, the voice is identical to the VOCALOID3 version and no adjustments have been made to it.
Cross-Synthesis notes:
  • Yumemi Nemu and Tone Rion V4 can use XSY with each other.
    • In total two packages offer the equivalent together of 2 additional voicebanks achievable via XSY. The total tone variation offered by the package comes to a theoretical 4 voicebanks in total.
Software issues as noted:
  • The two vocals of Rion and Nemu do have issues with sounding unique from each other despite being treated as different singers. This is mostly down to being based on the same singer.
    • When doing simple songs which don't challenge the vocal performance, you can often barely hear the differences between the two singers. However, when pushed to their limits Nemu out performs Rion on most things.


  1. VOCALOID NET announcement article