1. TalkBass Forums: The Bass Guit
Forum has 940,314 topics.
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
All About Jazz covers the world of jazz music, with interviews of top musicians and bands, albums reviews, free music, videos, photos, and news.
http://forums.allaboutjazz.com/  

6. Siccness Network
#1 Source for Gangsta Rap!
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. The Ill Community
The world's most dangerous community.
https://community.allhiphop.com/  

10. Punk
Forum has 666,356 posts.
http://www.punkrockers.com/vbforum/  

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

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

15. Rap Flava
Free Resource Business Templates Download
http://www.rapflava.com/forums/  

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