The Letter S was introduced in Peppermint Park Volume 6: Discover Feelings. The song features two letter S's singing about the letter S.
Lyrics[]
I am the coolest sound around, cause I make swinging sizzily sound.
Like swing and sway. And should we say.
Ssssssssss, sting!
I am the coolest sound around, cause I make softly swinging sound.
Like soulful, sweetly. And should we say.
Ssssssssss, salad!
Letter S not like the rest. It has a sense of style.
One more thing worth remembering. S just makes you smile.
I am the coolest sound around, cause I make very special sound.
Like silly, simple, and should we say. Ssssssssss, See ya later!