is a proposal by StackExchange users for a Q&A site on (yes, you guessed it) music.
The site description:
Proposed Q&A site for music listening enthusiasts, music historians, and members of the music press corps to ask questions regarding (known) interpretations of songs, historical influences of bands, and the music industry (including production) in general
The site has been in the stage area for some time and has reached the Commitment
phase, the last phase before effective launch. During this phase folk are asked to commit to the site; once at least 200 have committed the site goes live.
Here's the short description from Wikipaedia
for those unfamiliar with Stack Exchange:
Stack Exchange is a network of question and answer websites on diverse topics in many different fields, each site covering a specific topic, where questions, answers, and users are subject to a reputation award process. The sites are modeled after Stack Overflow, a forum for computer programming questions that was the original site in this network. The reputation system is designed to allow the sites to be self-moderating.