Pianoextra02.rar -

Run the file through a service like VirusTotal before extracting.

If you downloaded this from a forum or a peer-to-peer site, check the comments or the "readme" file inside for the creator's name. pianoextra02.rar

High-quality audio recordings (WAV or AIFF) of a specific piano meant to be loaded into a sampler like Kontakt. Run the file through a service like VirusTotal

A batch of PDF scores, possibly part of a series (given the "02" suffix). pianoextra02.rar

A collection of MIDI sequences for piano performances, often used for synthesizers or learning software like Synthesia.