Avid Sibelius v11.5.2 Mac OSX

System Requirements:
- Multicore Intel processor with 64-bit support*
- Mac OS X v10.11 (El Capitan), macOS v10.12 (Sierra), or macOS v10.13 (High Sierra)**
- 4 GB of RAM (8 GB recommended)
- 1024 x 768 display
- 2 GB of available hard-disk space for program installation (cannot install on a volume that uses a case-sensitive file system or on removable flash storage devices)