Katy Perry & Lady Gaga Ft. COLBY O’DONIS - Just Dance X Hot N Cold - ( MaSHuP )

The One That He Loves (Mashup) - Lady Gaga & Katy Perry

Katy Perry/Juicy J vs Britney Spears - Dark World

Kylie Minogue – Can't Get You Out of My Head (Alternative Rock AI Cover)

Lady Gaga & Katy Perry - Hot N Cold Hair (toMOOSE Mashup)

Crazy To The Rhythm | Britney Spears & Katy Perry feat. Skip Marley Mashup!

Lady Gaga - Just Dance ft. Katy Perry

Katy Perry - Hot N Cold (Official Music Video)

MASHUP ▷ Lady Gaga · Bloody Mary 🆚 The Dead Dance

Beggin On Your Knees - Part Of Me Mashup

If U Seek Amy x Hot N Cold - Britney Spears/Katy Perry Mashup

Lady Gaga - "Zombieboy" x Gwen Stefani - "Hollaback Girl" (Mashup)

Katy Perry (X) Britney Spears [ET (X) 3]

Britney Spears & Katy Perry - Till Part of Me Ends (Part of Me/Till The World Ends Mashup)

MANiCURE & Birthday | Lady Gaga & Katy Perry Mashup

Katy Perry Vs. Britney Spears - Hold It Against The One That Got Away (TheXRemixes Mashup)

Lady Gaga vs Katy Perry - Hair vs I Kissed a Girl (Utopia # 5)

If U Seek Amy / I Kissed A Girl (Britney Spears & Katy Perry Mashup)

Gimme Your Dark Horse - Britney Spears/ Katy Perry (Mashup)

Mike Candys Vs Katy Perry Walking On 2012 Air (DJ Looly Mashup #180)

David Guetta VS. Britney Spears - Little Drop Dead Beautiful Girl (TheXRemixes Mashup)