XTC
- XTC
- XX
- Xzibit
- Xilema
- Xiu Xiu
- X Factor
- XSense
- X-Treme
- X-Press 2
- XBox Rock
- Xicrò
- X
- Xplosiva Sound System
- X-Dar
- X-Mary
- Xid
- X-Toy
- XSS
- Xscape
- Xenia Ensemble
- Xtreme Entertainment
- Xangò
- X-Japan
- XYZ
- Xelius Project
- XCoast
- X-Darawish
- Xp8
- XII
- Xluve
- X27
- X-Makeena
- Xasthur
- Iannis Xenakis
- X-Change
- X & Y
- XS
- X-Hero
- Xanax Party
- XXL
- XXX
- X Over
- Xebb
- X-Zone
- X-Wife
- Xtravagance Core
- Xtreme Blues Dog
- Xeno
- Xierò
- Xen
- Xiao Boy
- Xkp
- Xiomara
- Xadoom
- X 102
- Xodiack
- Xela
- Xhin
- Xibalba
- X Ray Life
- Iannis Xenakis
- Paolo Xeres
- X
- X & Y
- X 102
- X Aid
- X Alfonso
- X Blues
- X Factor
- X Over
- X Ray Life
- X Sing Quartet
- X State Ride
- X Street
- X Street Band
- X Ta C 4x4 Sound System
- X Video
- X&Y
- X-Aphrodite
- X-Band
- X-Blockx
- X-Caliber Sound
- X-Change
- X-Circos
- X-Company
- X-Cuse
- X-Dar
- X-Darawish
- X-Hero
- X-Jam
- X-Japan
- X-Makeena
- X-Marillas
- X-Mary
- X-Maryllas
- X-Nose
- X-PO
- X-Perience
- X-Press 2
- X-Press Trio
- X-Ray Blues Band
- X-Side
- X-Static
- X-Tech
- X-Tence
- X-Tence/Mooka
- X-Tension
- X-Toy
- X-Treme
- X-Ufo
- X-Vai
- X-Wife
- X-Zone
- X-calator
- X27
- XBox Rock
- XCoast
- XDSS
- XI Comandamento
- XII
- XOC
- XPQ 21
- XRay
- XS
- XSS
- XSense
- XTC
- XX
- XX Century Zorro
- XX Project
- XX&XY
- XXL
- XXX
- XXYYXX
- XY Quartet
- XYZ
- Xabaras
- Xaddax
- Xadoom
- Xalam
