Acciddently created ALL songs in ITUNES to be by one artist (Cypress Hill!!)?

This may sound tedious but you can rename them individually, and no problems they will still play. I renamed mine as a lot came under "T" groups the Beatles etc. I just removed the "the" and it is more spread across the alphabet. I save my music to "my music"(surprise) and backup to an external hard drive to a folder of the same name, and copy n paste or click n drag,either way, following the prompts carefully. If I only have one or two I just do them but as a standard backup I do all personal data, on a regular basis, including business data, twice a month. Hard drives are reasonably cheap,if you look around, plus stock take sales getting close?