Sources report that, whether he’s surrounded by a group of friends singing the harmony to “I Dreamed a Dream” from Les Miserables or sitting in an algebra test controlling his pitch to complement the quiet rustling of pencils on paper, Clifford exists in a constant state of singing a high-pitched tone that turns whatever sound is going on around him into a full major chord.

“I wonder if Robbie’s going to get cast as Danny in Grease,” said Clifford’s friend Alice Ruthersbaugh as Clifford matched every syllable with a perfect tone that emanated out of his peaceful, angelic face.

Clifford then pursed his lips and moved his hands up and down softly as he harmonized with a firetruck siren that drove by before continuing to harmonize with his friends’ conversation.

At press time, someone blew a dog whistle and Clifford exploded.