Sir Simon Rattle has recorded two major Sibelius cycles with different orchestras, both highly regarded in the classical world:
The .part3.rar extension indicates that the original data (likely a large folder of FLAC or WAV audio files, or a high-definition video of a concert) was too large for a single transfer. Sibelius_Rattle.part3.rar
Scans of the liner notes providing historical context on the performances. Sir Simon Rattle has recorded two major Sibelius
Based on the filename , this file is the third segment of a split RAR archive likely containing high-quality recordings of Jean Sibelius's symphonies conducted by Sir Simon Rattle . Context of the Recording Sibelius_Rattle.part3.rar