Ok so essentially it's just:
C, Em, F, G (Sounds good along with the track if you arpeggiate the chords)
All the way through, but that probably won't be accepted so I will tab the intro as a
piece rather than a vibraphone piece or whatever it is:
[ Tab from: https://www.guitartabs.cc/tabs/s/seabear/cat_piano_tab.html ]
e----8----8-10-12----12-10-13----13-12-15----15-13-12---------------|
B-------------------------------------------------------------------|
G-------------------------------------------------------------------|
D-------------------------------------------------------------------|
A-------------------------------------------------------------------|
E-------------------------------------------------------------------|
Repeat, except last three notes.
And there you go really.