In a letter addressed to Shira Perlmutter, the US Register of Copyrights, Congressmen Ted Lieu (D) and Adam Schiff (D), plus Senator Marsha Blackburn (R), raised questions about whether Spotify’s new practice is in line with the spirit of the Music Modernization Act (MMA) of 2018. The bipartisan group of lawmakers highlighted the long-standing challenges faced by songwriters in receiving fair compensation under the compulsory licensing system.