Bach_guitar.rar -

Once extracted, you typically find a file like Bach_Guitar.mp3 or a .jpg of sheet music.

g., HackTheBox, PicoCTF, or a private lab) to give you the exact flag? Bach_Guitar.rar

Use strings to look for readable text at the end of the file. Inspect the LSB (Least Significant Bit) using zsteg . Open the file in Audacity . Once extracted, you typically find a file like Bach_Guitar

Check for DTMF tones (phone keypad sounds) that might represent a code. The flag is usually hidden in one of three ways: Bach_Guitar.rar

Looking for a in the archive (using 7z l -slt Bach_Guitar.rar ).