UFC 245: Usman vs. Covington was held on December 14 at T-Mobile Arena in Las Vegas, Nevada. These are the songs they walked out to, winner first.
Punahele Soriano defeated Oskar Piechota by KO (Punches, Round 1, 3:17)
https://www.youtube.com/watch?v=tbkOZTSvrHs
https://www.youtube.com/watch?v=ZzfC56URTbU
Jessica Eye defeated Viviane Araujo by Unanimous Decision (29-28, 29-28, 29-28)
https://www.youtube.com/watch?v=WPn_XQ2lziU
https://www.youtube.com/watch?v=fPO76Jlnz6c
Brandon Moreno defeated Kai Kara-France by Unanimous Decision (29-28, 29-28, 30-27)
Can't find embed for "El Corrido del Bebe Asesino" by Ariel Macias
https://www.youtube.com/watch?v=QubT0G1-TPI
Looks like mini jake shields
Matt Brown defeated Ben Saunders by KO (Punches, Round 2, 4:55)
Can't find embed for "I Am the Immortal" by Jasta
https://www.youtube.com/watch?v=6JXawllCeoY
Omari Akhmedov defeated Ian Heinisch by Unanimous Decision (29-28, 29-28, 29-28)
https://www.youtube.com/watch?v=xdmktWgZPn8
https://www.youtube.com/watch?v=bpZvg_FjL3Q
Irene Aldana defeated Ketlen Vieira by KO (Punches, Round 1, 4:51)
https://www.youtube.com/watch?v=FqfQXJSvbo4
https://www.youtube.com/watch?v=oCLUawi4HYY
Geoff Neal defeated Mike Perry by TKO (Kick/Punches, Round 1, 1:30)
https://www.youtube.com/watch?v=isEgT3FpOYY
https://www.youtube.com/watch?v=k8wUSSUfegs
Petr Yan defeated Urijah Faber by KO (High Kick, Round 3, 0:43)
https://www.youtube.com/watch?v=zPlTe84cos8
https://www.youtube.com/watch?v=5wBTdfAkqGU
Marlon Moraes defeated Jose Aldo by Split Decision (29-28, 28-29, 29-28)
https://www.youtube.com/watch?v=SAFWA7qxC0E
https://www.youtube.com/watch?v=ygC8b7F8lP0
Amanda Nunes defeated Germaine de Randamie by Unanimous Decision (49-44, 49-46, 49-45)
https://www.youtube.com/watch?v=HgknAaKNaMM
https://www.youtube.com/watch?v=6FYvX4qb4_o
Alexander Volkanovski defeated Max Holloway by Unanimous Decision (48-47, 48-47, 50-45)
https://www.youtube.com/watch?v=0OWQXQgHgq8
https://www.youtube.com/watch?v=ox5usAMEhNU
Kamaru Usman defeated Colby Covington by TKO (Strikes, Round 5, 4:10)
https://www.youtube.com/watch?v=JXbWwR4rSmY
https://www.youtube.com/watch?v=so4dgTRaWFk
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https://www.youtube.com/watch?v=jYRKvdEJSJc
I reckon that I'll give the nod to Ian Heinisch.