If you need a visual, think teddy bear with a switchblade.
To sums up the sound perfectly it's obviously very diverse, yet the theme of "timeless summer drenched pop" is consistent, making it comparable to the likes of "The White Album" & "Pet Sounds". But more Australian twilight BBQ than The Beach Boys.
Mat Creedon's sound is without doubt a special new kind of pop. Familiar enough to suck you in and interesting enough to keep you, well... interested.