sayonara

Challenge

Found some interesting words of advice left by sayonara-bye… help me understand it!

sayonara.mp3 MD5: 9f44501f0ac360c3255548c96b70aecb

Hint: Why does that right channel sound strange?

Solution

Opening the file in audacity and changing the view to spectogram (left side menu), we can just make out the flag in the right channel:

Flag