Tommy- he listens to the music discs and other than that he listens to some imagine dragons and 21 piolots

Tubbo- he listens to 80's music (I dont know what... it just seemed fitting)

Ranboo- listens to the theme songs from undertale

Philza- listens to weezer and sometimes queen

Techno- classical music and violin solos

Dream- he listens to his own music and his speed running music

Sapnap- early 2005 late 2007 music idk

(You can already tell I'm loosing my thought process with these)

George- he still not found

Sam nook- animal crossing and Wii music themes

Captain puffy- old pirate folk tales told by singing songs

Badboyhalo- listens to lofi music as well as calming beats

Skeppy- he listens to anime openings.

Wilbur soot- he listens to his own music as well as some old school types of music from when he was a kid

Also I should point out, all the dre smp members have all agreed that they listen to wilburs songs on loop sometimes (my headcanon, not irl)