Disclaimer: Most of them are japanese songs.

Q themed playlist: https://youtube.com/playlist?list=PLDH1D7EYRen7IKALauluH-XbAI2_etx4-

Kazuki themed playlist: https://youtube.com/playlist?list=PLDH1D7EYRen4DPNaln3z-2YazcCBEz-tc

Miu themed playlist: https://youtube.com/playlist?list=PLDH1D7EYRen6z3BN9h5iWrQFBw6HmRTa5

Jio themed playlist: https://youtube.com/playlist?list=PLDH1D7EYRen4jp4pf3GjZ7TJ6wady9QFp

Enoki themed playlist: https://youtube.com/playlist?list=PLDH1D7EYRen7a0rUtdNrE7D-Ycmoibkly

Yo themed playlist: https://youtube.com/playlist?list=PLDH1D7EYRen7Zs_Pdyx9qioYepuc_q5tC

Zero themed playlist: https://youtube.com/playlist?list=PLDH1D7EYRen4mmFxT3aK_bzDlmuklLaZD

Tsuki themed playlist: https://youtube.com/playlist?list=PLDH1D7EYRen4E59IZzMDpWV2YQfiTwKfP

Semba themed playlist: https://youtube.com/playlist?list=PLDH1D7EYRen4ssJ92_ASk49HVMjZ1wRjj

Saizo themed playlist: https://youtube.com/playlist?list=PLDH1D7EYRen5QVUaROX_cACmtXslgjW-0

Ichinosuke themed playlist: https://youtube.com/playlist?list=PLDH1D7EYRen567_FHHLNPChXOZ4qsL65C

Ueno/Sakura themed playlist: https://youtube.com/playlist?list=PLDH1D7EYRen4gp3ORZnmC1eG3zY57CFYs

Mita themed playlist: https://youtube.com/playlist?list=PLDH1D7EYRen6MTHwLlXmI2_51biZ-j03i

Hyakuichitaro themed playlist: https://youtube.com/playlist?list=PLDH1D7EYRen4PNx9cVM9T4fz8fXuWqtK9

Koishi themed playlist: https://www.youtube.com/playlist?list=PLDH1D7EYRen62woyFhrrCC737Uu19EDWZ