Jamie Killion and his son Jordan share many things.

Both father and son have splashes of blonde in their spiked hair — the highlights of the elder Killion, who recently turned 50, are slightly faded, while his son’s are brighter and clearer. The two are both taller than average, while the leaner Jordan, 19, stands a couple inches over his more built father.

Jamie stands loosely, with his arms folded over his chest, as Jordan leans against the wall across from his dad, dressed in formal attire for his performance in 20 minutes in “Elijah” and looking around for a nonexistent clock. I don’t mean to keep him late from rehearsing, but I simply must know:

“Why do you two want to perform together?”

So with all these traits they share, it only makes sense they share a performance — Jamie’s final of three recitals for his doctorate at 8 tonight in Pitman Recital Hall of Catlett Music Center.

“I talked to Jordan months and months ago about the possibility of singing with me, so that’s what we’re going to do,” his father says.

The father-son duo will perform the duet “The Sound of the Trumpet.” Jamie will then perform two arias and recitatives, five Strauss lieder and three Ravel pieces.

Both have a passion for music: Jamie, a man of faith from Chickasha, Okla., is pursuing his doctorate of musical arts in vocal performance at OU. Jordan, a sophomore, came to OU after his dad to study vocal performance and education. Both study with the same vocal teacher, Kim Josephson, an associate voice professor who has performed at the Metropolitan Opera in New York City.

It seems more than convenient that the two will perform together.

“I’m just taking advantage of the opportunity,” he says. “How many chances does father and son get to go to school together and then perform and study music.”

Music has always run through the Killion family.

“Music is just my passion,” Jordan says, as his father looks on in a silent agreement. “It’s definitely not for the money … I just love it so much.”