Charlie Kelly’s musicality comes through in Charlie Day’s performance, at least according to his friend and “Always Sunny” guest star, Guillermo del Toro. “The way you play Charlie is, I insist, very much like a musical instrument,” del Toro told Day in a conversation for Interview Magazine. “In your case, it would be a trumpet.” Day quipped back, “A trumpet somebody dropped a few times.”

Charlie is certainly brassy and full of frenetic energy, but Day’s musical background didn’t begin with a trumpet. “I’ve always considered myself a musical person,” the actor told SPIN. “I grew up the son of two music teachers and I grew up in a house full of musical instruments.” At the age of three, Day picked up a violin, and other instruments — including the piano, trombone, guitar, and harmonica — soon followed. “My sister has her doctorate in choral conducting, so everyone in my family is very familiar with music and plays a little music,” Day elaborated.

For Day, “Always Sunny” is an outlet to write and perform songs, which had been a lifelong hobby of the actor’s. Charlie’s songs are pretty good, too, especially those that tap into a Randy Newman, Leon Russell sensibility. He could probably leave his janitorial duties behind for a music career were it not for all that toxic paint.

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