Seventeen music publishers in the US has sued Twitter, claiming the platform enabled copyright violations involving nearly 1,700 songs.
The National Music Publishers' Association (NMPA) is seeking more than $250m (£197.7m) in damages, reports BBC.
The case filed at the Federal District Court in Nashville, the NMPA claimed Twitter "permits and encourages infringement" for profit.
It says the situation has not improved since Elon Musk bought the company.
The NMPA, which represents firms - including Sony Music Publishing, BMG Rights Management and Universal Music Publishing Group - alleged that Twitter continues to "reap huge profits from the availability of unlicensed music without paying the necessary licensing fees for it".
It added that the infringements have given Twitter an "unfair advantage" over competitors - including TikTok, Facebook, Instagram, YouTube and Snapchat - which pay for music licenses.
Twitter "stands alone as the largest social media platform that has completely refused to license the millions of songs on its service," NMPA said in a statement.
Bd-pratidin English/Golam Rosul
