Brings under its stewardship more than 45,000 works

The deal would include publishing rights to Justin Bieber, Rihanna and more

The exec brings more than 18 years of A&R experience to the role

The parties will attempt to negotiate an out-of-court settlement

Sony Music Publishing acquired Hipgnosis Songs Group LLC from Blackstone, gaining copyrights from artists like One Direction and Shawn Mendes.