Lloyd~ Shots by Imagine Dragon, it's a good feel song and he listens to it whenever they go on road trips. 

Kai~ Senorita by Camila Cabello & Shawn Mendes, he stans any song that has Camila Cabello in it. This is just the top of the top of his favorite songs of all time. 

Cole~ Alive by Sia, he listens to it and remembers how many times he survived falling from hundred to thousands of feet off a building. (Seriously how the heck is he not dead yet after how many times he fell lol)

Jay~ High School Sweethearts by Melanie Martinez, he's a sucker for romance. (He's practically living in it lol)

Zane~ You Are The Reason by Calum Scott, he thinks about all of the times he sacrificed himself to save those who cannot protect themselves whenever he listens to the song. And then puts in on repeat until Pixal gets annoyed XD.

Nya~ Turning Tables by Adele, she just really likes Adele's voice whenever she sings.