I think that as musicians migrate to Steemit that will happen naturally.  The fanbase of the artists will likely prefer authentic content connected to the artists they like.  People who enjoy content of that type, and who also are aware of the income potential of Steemit posts, will be likely to spurn content that is not authorized or helpful to the artists.

Perhaps a 'verification' badge for artist supportive content might be helpful to the community in selecting which content to support, and which to avoid as parasitic, rather than symbiotic, or mutualistic (sorry about the biology based labels, but the relationships between organisms seems apt analogy in this context).

I have worked as a musician, and have children currently who do, so I am aware of how the industry has changed markedly and the impacts on artists these changes have brought.  Steemit may well be a venue for marketing their work that can dramatically improve that industry.  

In the immense focus of remuneration on 'stars' the great number of less popular but no less skilled artists have been poorly motivated financially (to say the least).  Steemit potentiates means, such as paying for original works, or simply upvoting posts by artists, that can improve the financial situation for artists.