MTV got crafty and mashed the songs “Tik Tok” from Ke$ha and “Baby” from Justin Bieber in honor of both of them turning another year older today.

Today is Justin’s 16th birthday, while Ke$ha turns 23-years-old today.

Happy birthday to the two singing sensations! What do you think of the mashup?

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• Happy 17th Birthday Justin Bieber March 1, 2011
• Happy 22nd Birthday Taylor Swift December 13, 2011
• Happy Birthday To Justin Bieber’s Sister Jazzy Bieber
• Happy Birthday To Justin Bieber’s Mom!
• Kesha Thinks Justin Bieber Is A “Tiny Little Baby”