Katamari on the Rocks (Beatbox Version), "Katamari on the Swing", "Baby Universe", "DISCO☆PRINCE" (oh ma gawd, if you want a sure fire to make somebody come, play this track)

"Bowser's Highway Showdown", "The Bullet Bill Express", "A Boss Approaches", "Hisstocrat", the three Great Tower tracks

Has a lot of bangers but Floor 2-3 I feel is the strongest.
From 0:15 - 1:15 and 2:15 - 2:44 my ears are in heaven

Especially "Revived Power"

The battle themes, Whims of Fate and the original intro, fam

Katamari on the Funk

Somebody also make that a drink

That Buoy Base Remix, BAAAAAASSSS

The Main Theme, Electrodrome, Mount Wario, Bowser's Castle, Wario Stadium, Mute City, Neo Bowser City and Big Blue

Katamari on the Rocks

Somebody make that a drink

Especially "Relics", "The Wasteland" and "The Blast Garden"

I'm thinking about "You're Not Supposed To Be Here"

BFG Division will never not slap

Around The World vs Bust A Move, Poison vs Intergalactic

RUUUUUUUUUUUUUUDE BUSTER

and Checker Dance

Bard OST by Girlfriend Records is underrated

"We've Got Hostiles", "Blast Pit 3", "Power Up", "On A Rail 2", "Residue Processing", "Questionable Ethics" (1 & 2), "Forget about Freeman" (that track is for the history books)