Kevin Olusola

We can watch videos of our whole journey - from old tours to doing the AMAs (American Music Awards) in 2013 and through the 'Star Wars' medley or when we sang with Stevie Wonder on the Grammys. I just sit back and say, 'I can't believe we did all this!'

It's quite difficult to figure out a common thread among us all as we're five very different people who love different types of music.

I actually love the challenge of being in a new place where I'm so obviously the foreigner.

Performing the American Music Awards and having Harrison Ford introduce you behind the John Williams orchestra for Star Wars, and then Meghan Trainor is in the front just standing up and like, 'I love you guys!' That was a huge moment.

We're a microcosm of America and are blessed to live in a country that's so diverse. While it's great for people to see that we can love and respect each other and work together, despite our differences, at the end of the day, we just want to make great music.

I would say Whitney Houston's 'I Will Always Love You' is up there - it's one of the best.

I absolutely love Shirley Temples. I don't know why, but ever since I was young, it's always been my favorite thing to drink!

Imogen Heap - she was in the baggage claim at the airport and was like, 'You're from Pentatonix, right?' She's like, I love you guys! I'm like, that's awesome.

My parents always instilled in me to be a citizen of the world, so that's why I've taken to traveling and why it's such a huge part of my life.

If I'm fulfilled mentally, spiritually, and physically by my daily activities and I'm constantly striving to grow by living out of my comfort zone, then I am successful.

With an arena, it sounds so big and full sometimes it can obstruct the way we sing because we're hearing so much slapback and things like that.

Christmas and a cappella - what we learned really, really well is that they go extremely well together.