Bruno Mars (né Peter Gene Hernandez) is an American singer-songwriter. He rose to fame in 2010 with the Billboard Hot 100 No. 1 songs "Nothin' on You," "Just the Way You Are" and "Grenade.

The original poster asked: "What's the song from the melody of 'APT.' by Rosé and Bruno Mars? Hollywood legend ... since ...

Bruno Mars is ... it's because he wrote the song. He did a fine job to reinventing the track into a smooth R&B slow jam, swapping Adele's raw emotion for some slinky Mars swag.