favourite song RELEASED in 2019 or favourite song IN 2019? 2019 released: RICKY or SPEEDBOAT, both by Denzel Curry 2019 in general: there are many but probably Rejoice by AJJ
currently a tie between those 6 songs https://www.youtube.com/watch?v=YnlwwJS_918&list=PLPRWtKgY2MOuOVeGPrDJqh6XFtbe-Wt3m&index=6