Thanks, I added a lot of music tracks to the game, there are 8 in race music tracks played at random and 11 music tracks in all, from:
https://www.chosic.com/free-music/all/
music by Komiku
Komiku 01 Level 7 Pogo against fascism
Komiku 02 Level 1 Jump and shoot stuff 101
Komiku 03 Boss 6 Swoop attack
Komiku 04 Car chasing pew pew
Komiku_01_Ancient_Heavy_Tech_Donjon
Komiku_05_La_Citadelle
Komiku_06_Level_6_Second_strike
Komiku_07_Run_against_the_universe
Komiku_08_Boss_3_This_is_the_time_to_glisten
Komiku_08_Level_9_One_more_step_till_the_fall_of_patriarchy
Komiku_10_Level_3_Run_on_the_expressway