Do you copyright your songs before showing it to producers?

[QuestionAsker]

I’ve been working on an EP the past year and have 5 songs I feel are solid and ready to be recorded, and then released under my own artist name (will be my first release).

I’ve only composed it with voice and guitar, production is my weak point, so my plan is to record them as solid demos with just guitar and vocals and show them to a few producers near me.

I’d probably show it to about 4-5 producers, I don’t really know them, just people near me, or ones that have been recommended through acquaintances, etc.

Just wondering how many on here register their songs before showing them to producers or shopping them around to artists / etc.

(I've read it's also much better to copyright songs individually, vs as a group, as it's much more beneficial in case it does every become a legal issue.

I also think I have to copyright them again, once I'll do the official release? Or is that not the case, if the lyrics/melody haven't really changed?)