UPDATED: Twitter Music Links To Spotify & More, Where To Sign Up

UPDATE: An enterprising coder, Yousef Sahran,  dug into the underling HTML for the new Twitter Music app and found that both a web and a mobile version. The code also revealed that users will be able to connect to Spotify, Rdio, iTunes, Soundcloud, Vevo and Youtube.

Twitter is rolling out it's music services with celebrities and influencers first. The public will get access to the music app next week.  

When it does go public, sign up will be https://music.twitter.com, which currently reads "Invite Only". More here.