Talent is nothing without marketing. You could be a great musician, vocalist, producer, etc but the world will never know if you do not employ the effective methods of promotion.
1. Using proper opinion leaders is very important. Radio and the Press are staples, of course, but you should seek out other opinion leaders online and get them to push your story as well. The web reaches millions and there is no reason why you should not tap into this resource.
2. Having a professional website is another concern. The site should allow users to get to where they want and access information with only a few clicks. This is important especially if you plan to make any sales using the website. You should also make sure that the website is not just a copy of material that can be found anywhere. Rather, it should be different enough while complementing you offline material.
3. Be everywhere you can on the internet. Be it social media networks, blogs, forums, etc get on it and be active. Your own website should also be full of helpful information providing the right information about you as well as other topics of musical interest.
4. Consider everyone when you design the site. Not all users online possess fast connections. However, the site must be designed in a way that it looks good while being accessible to all. Focus on search engine optimization so that you can be found easily.
5. Do not have a hit and run site. The frequency with which information is updated and your interactions with visitors to the site must be high. Otherwise, people will lose interest.