The music Penny and Freddy hear through the woods is a LOW sound. Low music is written on the BASS staff with a BASS clef symbol. The bass clef looks like Betty’s ear!
The music Penny hears from up in the tree is a HIGH sound. High music is written on the TREBLE staff with a TREBLE clef symbol. The bottom of the treble clef looks like Trevor’s tail peeking out from the tree!