Although the Backstreet Boys member has dozens of hits with his pop group, his 10-year-old, Elliott, much prefers the other five-piece that ruled the airwaves during the ’90s. As AJ exclusively shared with E! News, he has “caught her multiple times” jamming out to music from Justin Timberlake, JC Chasez Lance Bass, Joey Fatone and Chris Kirkpatrick‘s iconic band.