1. TalkBass Forums: The Bass Guit
The premier online community for bass players. Bass guitar and double bass forums, gear reviews, and more.
http://www.talkbass.com/forum/  

2. BuzzJack Music
Music forum community focusing on chart music with fan forums and entertainment discussion. Discuss latest music charts, chart chat, music news and a wide selection of solo artists, groups and bands.
http://www.buzzjack.com/forums/  

3. Ultimate Metal - Heavy Metal Forum and Community
Metal forum featuring official forums for Children of Bodom, ProgPower USA, Symphony X, Divebomb Records, Laser's Edge and many more. Also featuring heavy metal reviews, news and interviews.
http://www.ultimatemetal.com/forum/  

4. Community: Music/Off-Topic
General discussion and community threads.
https://www.sputnikmusic.com/forums/  

5. All About Jazz
Forum has 436 topics.
http://forums.allaboutjazz.com/  

6. Siccness Network
Forum has 350,513 topics.
http://siccness.net/vb/  

7. Rapmusic.com
Battle Rap's Homebase
http://board.rapmusic.com/  

8. Stereokiller.com
Hardcore, Metal, Emo, Screamo and Hip-Hop Music Message boards. Social networking and profiles.
https://www.stereokiller.com/boards/index.cfm  

9. Punk
The Punkrockers.com message boards. Come here to discuss all aspects of Punk Rock
http://www.punkrockers.com/vbforum/  

10. The Ill Community
The world's most dangerous community.
https://community.allhiphop.com/  

11. West Coast Connection
West Coast Connection Forum - Index
http://www.dubcc.com/forum/  

12. loudersound
Metal Hammer
http://www.metalhammer.co.uk/forum/  

13. Internet Explorer cannot displ
http://forums.projectcovo.com/index.php  

14. Internet Explorer cannot displ
http://www.rapflava.com/forums/  

15. allkpop forums
all kpop all the time
https://www.allkpop.com/forum/  

16. The Popjustice Forum
It's all about the music except when it's not.
https://forum.popjustice.com/