Switch the view to . The flag is often written visually in the higher frequencies of the audio track.
A text file named flag.txt extracted from the image.
Typically looks like CTF{...} or FLAG{...} .
Check for hidden data using steghide (common password: bach ).
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 .
Brute-forcing if the hint suggests a simple word (like "bach" or "guitar").
Data hidden after the "End of File" marker (EOF), viewable in a Hex editor.