This one is in 6 parts. Often we are singing in unison and the six parts come during the chorus.
The first verse is in unison. Nice and easy. The second has a low harmony for the green/blue/purple singers. The third verse has a high harmony for the red/pinks. We then come back full circle to a unison final verse.
This is a full recording by my Online Liberty Singers for guidance.
And here are the parts.