Since you said you only know the one Sia song, try these -
1,
2,
3,
4
A bit of metal for you, I tried to avoid anything with much screaming -
1,
2
An Aussie artist you probably have never heard of -
1
Another Aussie artist -
1 (full EP)
I found this one as a featured artist on something -
1
I found this group in the rating thread -
1