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.

Sir Simon Rattle has recorded two major Sibelius cycles with different orchestras, both highly regarded in the classical world:

Often included are works like Finlandia , The Oceanides , or Tapiola .

A prestigious box set recorded live at the Philharmonie Berlin. This set is famous for its "Direct-to-Disc" vinyl releases and high-resolution digital audio (24-bit/192kHz).