Back in 2018, Benny Blanco released his debut solo single “Eastside,” which featured Khalid and Halsey. The song was a hit, breaking the top 10 on the Hot 100; Halsey performed it when she was on SNL. Now, however, the trio — along with co-writer Ed Sheeran, and all the labels involved — are being sued by songwriters who claim “Eastside” was a ripoff. (This is not Sheeran’s first run-in with such lawsuits.)