These are the chords for the singing part of the song. Sounds good as power
chords but I think it fits with the song better as full chords. The rythm is easy to pick up:

     E  A  D  G  B  E
G# - X  11 13 13 13 11

D# - 11 13 13 12 11 11

C# - 9  11 11 10 9  9


G#                   D#    C#
Party rock is in the house tonight
G#                 D#     C#
Everybody just have a good time
G#                    D#        C#
And we gonna make you lose your mind
G#                 D#      C#
Everybody just have a good time [X2]