How Brandon Kazen-Maddox, an American Sign Language Artist, Spends Their Sundays

Brandon Kazen-Maddox has always felt an affinity with mermaids.

“We both straddle two worlds,” said Mx. Kazen-Maddox, 36, an American Sign Language dancer, choreographer and filmmaker who is nonbinary and uses they/them pronouns.

Mx. Kazen-Maddox, like both their parents, is hearing. But they grew up living with their mother at her parents’ home in Washington State, where their maternal grandparents, both of whom are deaf, spoke with their hands.

Soon, Mx. Kazen-Maddox learned to do the same. “I like to say my words are just along for the ride,” they said.

Mx. Kazen-Maddox has been interpreting professionally since 2012 and has worked on the Broadway production of “Aladdin” and for former President Joe Biden, the composer Lin-Manuel Miranda and the actress Marlee Matlin.

In a half-hour PBS special scheduled for Tuesday, “SOUL(SIGNS): Making Music Visible,” Mx. Kazen-Maddox documented the process of choreographing, filming and performing an A.S.L. music video for Morgan James’s “Drown,” shedding light on their own relationship with music and sign language.