Why do audio files get bigger in size when chaning their info?

[Android Central Question]

Why does it happen? I changed artist name and song name and size jumped from 2MB to 5MB. And I just noticed that after I did this with like 100 songs... So I probably doubled my music folder size just by changing this info. I use Huawei P10 Lite device and did this with Huawei's default music app. Is there a way to fix this?

Thanks in advance