The Office US theme song, but with My Little Pony Equestria Girls. An interesting crossover that I have not heard of thus far.

Credits:
This is a parody for non-profit entertainment purposes and qualifies as fair use. The Office and MLP do not belong to me.

Liberation Sans font: https://www.dafont.com/liberation-sans.font
Horse icon: by Eric Milet, https://thenounproject.com/term/horseback-riding/78374/