Open MPC File
The MPC file is a compressed audio file with Musepack audio compression.
Said MPC is based on the MPEG-1 Layer-2 or MP2 algorithms, but with several improvements.
It should be said that the MPC file is not as profuse as those that have MP3 compression, however, it is recognized that it has a higher quality sound.
MPC is the format that replaced the MPN format, previously used by Musepack to compress audio files.
Software to open an MPC file
Most standard audio players can open MPC files.
However, if not, there is probably a plugin that allows you to do so.