What are some genuine digital marketing companies?

[SimbaShan]

I'm looking for companies that can digitally market music which is in the genres of R&B, Urban, Pop, HipHop etc.
Mainly looking for companies that can provide social marketing, email blasts etc
I'm familiar with most current companies but if anyone has had first hand experience please let me know.

[Andrew]

I think you are too focused on music marketing. Think of it as any business. Do you have a website for people to visit if they are interested? You can put some of your best music on the website for trail. It is easier to show people a website than have them sit down and listen. I hope this helps.