I've heard several Christian songs live because I love attending concerts and I also got the opportunity to attend Camp Electric when I was sixteen. At that camp, several different Christian bands came and performed and gave music lessons. It was an awesome experience.
One of the best concerts I've ever attended was with the Newsboys when I was a freshman in high school. This was back when Peter Furler was still the lead singer and Paul Colman was still the guitarist. (They are both my heroes.) I was able to sit on one of the very front rows. At the end of the concert, I got to meet the band and they signed my electric guitar. I was pretty amazed! I love the Newsboys's old songs like "In Christ Alone" and "Take Me to Your Leader."
They performed some of their older songs during that concert, so I got to hear live:
"Shine" by Newsboys