Here is one of my favorite Gorillaz songs.

Here is what I think 5/4 is played like; it just sounds like it works better like this.

This is the verse. (Just play this over and over, you?ll pick up the strumming as you play the song.)

e|-------------------------|
B|-------------------------|
G|-------5-5-5-------------|
D|--5-5-?3-3-3--5-5/8-8-8--|
A|--3-3?-3-3-3-?3-3/6-6-6--|
E|--3-3---------3-3/6-6-6--|

I think the chorus goes something like this.

e|-----------------------------|
B|-----------------------------|
G|--7-7-7-7-7-7-7-7-7-7-7-7-7--|
D|--5-5-5-5-5-5-5-5-5-5-5-5-5--|
A|--5-5-5-5-5-5-5-5-5-5-5-5-5--|
E|-----------------------------|

Well, I hope this helps to play the song.