Pase A, Hermana M, Clarusty F. A Review of the Principle of Freedom of Contract and Copyright Protection: A Juridical Analysis of Constitutional Court Decision No. 63/PUU-XIX/2021 concerning Full Flat-Pay (Outright Sale) Agreements in the Music Industry. jhs [Internet]. 25Oct.2026 [cited 29Oct.2026];12(2):1057-64. Available from: https://jurnal.unived.ac.id/index.php/jhs/article/view/12436