Bach_guitar.rar Here

Checking the of the .rar file itself (using exiftool ).

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

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

A text file named flag.txt extracted from the image. Bach_Guitar.rar

Brute-forcing if the hint suggests a simple word (like "bach" or "guitar").