It's different for every song. But for 'Say Something,' I think it was Chad who had an idea on guitar, and I had an idea on piano for different songs, and we just married them together. We bounce things off each other constantly and kind of massage all these ideas into a three and a half minute pop song.

There are people we look up to, like Lady Gaga and what she's built. She's not afraid to own who she is.

We never thought 'Say Something' would be a holiday song. I'm still surprised that it's resonating at this time of year. Maybe that's why it's working so well - it balances out all the joy.

I started writing songs when I was real young, when I was 3 years old. The piano spoke to me - I don't remember when I wasn't playing piano. My second grade talent show was the first time I performed my own thing. I dressed up as Dracula and played a song called 'Monster Rock' that I wrote. And I won.