"I did choir in high school, I did choir all growing up and I know that I would have loved someone to come and help out," said Jakle.
She worked with the students on their vocal delivery.
"For me, it's not hitting the right notes that's the most important thing -- well it is the most important thing -- but after that it's so important to work on phrasing and then work on the lyrics and what they mean to you personally," explained Jakle.
"Just to be present, and think about what the words really mean," echoed Phillips. "Because it comes off so much more real. And just shaping the words, and giving the music life."
Jakle taught the students a new arrangement for the Christmas classic "Silent Night."
"What she gave us was very different, but I think it's very modern and it's going to be very nice when we perform it because I think it's going to surprise a lot of people," said Phillips.
The students said it was a one-of-a-kind opportunity.
"She's so down to earth, but at the same time, we were all really kind of nervous," said Phillips. "But we really wanted to impress her I know."
"It's so funny to me," said Jakle. "Because I don't feel... important, I guess. But I'm happy to be here and happy that it means something to them - like that means a lot to me."
"Silent Night" can be heard during the school's Christmas concert this month as well as on a PBS special that will air in January.