I actually do this. Not out loud but every time a girl speaks there's a different voice in my head. Not sure if it's weird but I accept my brain for doing it lol. Which is why, as
Son of Durin pointed out, it would be a nightmare having Japanese VA's because it would ruin the immersion for me. I can't stand the screeching.
Also, bringing the right song to a scene is, to me, one of the most important components that makes the scene whole. You have to consider the atmosphere, the ambiance, the mood. Mesh together with the perfect song that fits the vibe to create the perfect sensual scene that imprints the song into your memories which you will never forget. A good song in a scene is so important.
Being able to write as a skilled storyteller with such humor as well as crafting the perfect scenes with such god-tier music places Caribdis on another level. He's not a jack of all trades. He's the master of one.