Davide Biale (IPA: [ˈdaːvide ˈbjaːle]Savona, 5 April 1994),[2][3] better known by his online alias Davie504, is an Italian musician and YouTuber.

He is best known for playing bass guitar, primarily with a slapping technique, and creating several covers and viral videos.

[4] Biale began playing bass in high school after being influenced by Kiss bassist Gene Simmons.

[19] He received his YouTube Gold Play Button later that year, which he turned into a custom bass alongside Amnesia Guitars.

[26][27] In a 2013 Q&A video, Biale cited Flea, Gene Simmons, Marcus Miller, Victor Wooten as some of his favorite bass players.