Does the overcrowded and cut-throat music streaming business have room for an additional player? The world’s most valuable startup certainly thinks so. Chinese conglomerate ByteDance, valued at over $75 billion, is working on a music streaming service, two sources familiar with the matter told TechCrunch. The company, which operates popular app TikTok, has held discussions with music labels in recent months to launch the app as soon as end of this quarter, one of the sources said. The app will offer both a premium and an ad-supported free tier, one of the sources said.