So may people use spam as a way to promote their product!!!! This is the wrong answer. Most of the time people who get unsolicited e-mails will either delete the message before they open the attachment or send you a nasty gram asking you not to spam them. If you try these steps I am confident that you will get better results
1. Know your target market
2. Find out where your market is online
3. Engage them …. ask them questions about your product, what they like and dislike
4. Create conversation
5. Then make them your fans!!!!
Trust me you can’t build a fan base unless people are actually listening to your music