Does it affect the performance of a campaign if an ad mentions an artist in the text, but the picture shows a different artist?

Differences in ad content

Yes and no. In our experience, ads do not perform worse when artists differ in image and text. As a general rule, we recommend keeping the texts as generic as possible, even when including the suggested keywords in the campaign set-up, so that it doesn't make a big difference who is ultimately featured in an ad image.