dynamic block title for block-view of referencing nodes
Add the content title a second time, but this time set the relationship so that the artist's name is displayed. Set the display of this title to hidden, and make sure it has a label which reads : 'Other albums by'.

Then in the Format section, select settings, and then group by this artist title field you have just added and hidden.

The title will get wrapped in an h3. If you want to wrap it in an h2 then you will have to override the views template, one of the suggestions in the Style Output of the provided theme information.