Here is a summary of the hints for this clue so far from Admin, Mods and Questers:
If you are looking at a black cat, you have walked into a dead end! It means you clicked the cat...rather than the line that said “go to classes”....witch is always being a heckler!
retrace your steps and click again!
For this one you need to know how to read music
just look up "how to read music for Bass clef"
The highlighted notes are important,
and you'll have to know how clefs work,
in order to find the word to your next clue.
Look at the music to see if some of the notes look different, are highlighted or something. Then name those notes.
You will end up with one word when you 'translate' the notes correctly.