A music press release is based on the same requirements set for any other press release. So, if you are good at press release writing, you will have no problem designing this kind of releases. On the other hand, there are some specific features that apply only to music press releases. You should know them if you plan to work on this task any time soon.
 
So, your music press release should be:

1. Well-structured: you want your audience to see all the main points clearly; they should face no problem finding the most important information. Besides, when you get a chaotically organized music press release, you do not spend time looking for information, you simply throw it away.
2. Answering all W-questions: you should inform your readers about what kind of event you are going to hold, who will be your special guests, where and when it will take place, and, the most important question to address is why your audience should visit this particular type of event, what is so special about it.
3. Fun: this is a music press release, and music is never boring or dull. You need to include some visual elements, like pictures, photos of special guests, even cartoons. Try to make your music press release funny, humorous, and appealing.
4. Exciting: this is something different from fun, since here you get your audience really interested in coming and experiencing your event. Your music press release should evoke desire to come and be a part of this event.

As you have understood, your music press release should be both well-structured and fun. If you think you cannot combine these two features, you should order your music press release from some experienced press release writing service.