Funkin Vortex seems really great, and I'm really liking it so far, but I do have a problem, that problem being that I don't know how many 4ths, for example, are  in a minute, and I'm finding it really hard to have the notes in sync with the vocals, but since I already know the BPM of the song, I would find it really useful if I knew  the amount of notes per minute, so if you know how many 4ths there's in a minute for example, please tell me.