Wrong album art on my iPhone

Hello SimonRoncoroni,

Welcome to Apple Support Communities!

Try using these steps to fix the artwork for your music:

"Add artwork to music and video

1. In the Music app on your Mac, click Songs in the sidebar on the left.
2. Select one or more songs in your music library, choose Song > Info, click Artwork, then do one of the following:

• Click Add Artwork, select an image file, then click Open.
• Drag the image file to the artwork area.

To retrieve album artwork from the iTunes Store for your entire library, choose File > Library > Get Album Artwork."

This Apple Support page has the full details: Add artwork to content in Music on Mac - Apple Support

Please let us know if you have further questions.

Cheers!

You are very welcome, SimonRoncoroni.

Let us know if we can help with anything else at all. Thanks and have a fabulous day!