The 552nd UFC event, known as UFC Vegas 19, UFC Fight Night: Blaydes vs. Lewis, UFC Fight Night 185, and UFC on ESPN+ 43, will be held on Saturday, February 20, 2021, at the UFC APEX in Las Vegas, Nevada.
These are the songs they walked out to, winner first.
Derrick Lewis defeated Curtis Blaydes by KO (Uppercut, Round 2, 1:26)
Yana Kunitskaya defeated Ketlen Vieira by Unanimous Decision (29-28, 29-28, 29-28)
Darrick Minner defeated Charles Rosa by Unanimous Decision (30-27, 30-26, 29-27)
Chris Daukaus defeated Aleksei Oleinik by TKO (Punches, Round 1, 1:55)
Phil Hawes defeated Nassourdine Imavov by Majority Decision (28-28, 29-28, 29-28)
Tom Aspinall defeated Andrei Arlovski by Submission (RNC, Round 2, 1:09)
UFC.com identifies the song as "Watchdog” by Issaya, but no link is available.