Before opening, run a scan using a service like VirusTotal to ensure it isn't an executable disguised as a music file.
The file appears to be a compressed archive containing a low-bitrate MP3 of the 1999 hit song by the Red Hot Chili Peppers. Technical Review RHCP - Otherside (128kbps).rar
RAR is a common compression format used to reduce file size or bundle multiple items together. You will need a utility like WinRAR or 7-Zip to open it. Artistic Review (The Song) Before opening, run a scan using a service