My thoughts on their music tastes!
I imagine Terasaka to have a perfomative music taste he answers with when asked by others that contrasts with his actual taste. Due to his image, his standard answer is rock like Takeshi Sorimachi, but in reality his favourite music is upbeat pop from female idol groups, particularly KPop girl groups. It aligns with his secret interest in moe and is something I believe he keeps heavily under wraps. His favourite groups include TWICE, LOONA and Red Velvet. The music calms him and puts him at ease.
Hazama's involvement in goth subculture with her fashion and interests translates, of course, to music. Dark instrumentals with heavy use of organs and lyrics about death and other morbid topics that speak to her soul. Her favourite genres would be goth rock and visual kei, with a sprinkling of punk rock too. Her favourite artists and bands are MAMA, London After Midnight, and VAMPIRE ROSE.
Muramatsu would be into rock, particularly punk rock, and electronic music. Muramatsu is, more than any other member of the gang, invested in delinquent culture. He reads delinquent manga, dresses in a punk and yankee style, and was sent to E-Class in part for his poor behaviour. I think this would also influence the music he listens to. His favourite artists are Kishidan, Hotei and THE STREET BEATS.
Yoshida's music taste can be described as "music that reminds him of riding his motorcycle". A lot of fast-paced rock that makes him feel alive as well as '80s and '90s style pop and hip-hop. Since I headcanon him to be half-Haitian on his mother's side, I included some popular Haitian music that I think he would be into, especially when he just needs to relax. His favourite artists are redballoon, Ayase and Alan Cavé.
Itona's interest in electronics extends to the music he likes to listen to - electronic and vocaloid. I think he particularly likes the more intense vocaloid songs and listens to old, 8-bit video game tracks too, especially while he works. His favourite artists are Yellow Magic Orchestra, Yoshinori Sunahara, Maretu and INABAKUMORI.