If I create a resource pack for Minecraft, am I able to have more natural sounds than there already are? For example, creeper sound files range from "creeper1" to "creeper4". If I were to add a file named "creeper5" will it play naturally, at random, just like all the other "creeper#" files? Or are only a certain range of files set to play?
Also, if I add a sound file that wouldn't overwrite sounds files that already exist (such as someone narrating an intro, named "intro.ogg"), would I be able to play that sound in a command block?