Recorder to Randoseru Mi☆

This list covers any anime that utilizes vocal synths (VOCALOID, UTAU, CeVIO, Synthesizer-V, etc.) in some sort of way. This mostly focuses on direct usages of vocal synths within the shows, but some of the entries here are attached for more unusual reasons.

Note that I will not be counting song videos for this, nor am I cataloging simple references to Miku (so no Hyouka, for instance). I also may not have everything in-scope listed; these are just the ones I know about. If I'm missing anything, please let me know in a DM!!

The order's a bit messy due to odd overlap areas (thanks, Jashin-chan), but here's the basics and their general order:
-Shows based on Vocaloid song series
-Shows with official, licensed voicebanks
-Shows that utilize vocal synths in-show for non-musical purposes
-Shows with vocal synth characters (i.e., Hatsune Miku)
-Shows with vocal synths used in the music
-Shows that cover vocal synth songs
-Shows that reference vocal synth technology as a plot point
[Note: will update the numbers later. Feel too sick to do so currently.]

I'm trying to compile an exhaustive list of anime containing live-action passages, and here's part 1. If you have any anime to suggest with the timestamp where live-action appears, I'd love to hear from you.

I checked everything carefully. If there is no note, it means that it cannot be overlooked.

Part 2: https://myanimelist.net/stacks/68380
Part 3: https://myanimelist.net/stacks/70046