WORK IN PROGRESS
Here are some additional info about advanced techniques that can be used when building a custom, as well as figuring out certain errors that might occur
WORK IN PROGRESS
By default, a song will have its animation pool based on which genre you choose, and whoever sings which harmony part is predetermined by instrument. To change this, first build a test build, then extract the MILO file and open it in the MiloMod software that's now bundled with ConTools.
WORK IN PROGRESS
Sometimes a song will refuse to build even when the MIDI itself seems fine:
One of these methods seem to usually fix it: