Make Tomodachi Life's TTS say whatever you want!
This website uses a patched version of Tomodachi Life and a custom build of Citra to make Miis say whatever you want! Try it out at https://talkmodachi.dylanpdx.io/ The tool is currently work in progress, so not a lot is documented here, but I hope to change that in the future!
For hosting this locally, see Hosting. For a very detailed (and nerdy) look at what I've reverse engineered so far, check out Internals. For information about singing, take a look at Singing.