This is an unreleased leak from Avicii probably made back in 2012 somewhere. I got a feeling Nile Rodgers is a part of this track also. 
I made an edit myself hope you enjoy.

Calico

Avicii ft. Adam Lambert - Calico (Edstr0m Edit)

Avicii - My Love (feat. Beth Ditto)

Avicii - Tall ft. Alex Ebert [Demo Leak]

A world without boundaries

Avicii & Alesso - Come To Me (ID - Unreleased)

Avicii - I'll Be Gone (Avicii By Avicii)[Official Audio]

This Mashup contains :
Coldplay - Atlas (Avicii Edit)
Avicii - Our Love/ID (Unreleased)

For download link contact at 
"avlncemusic@gmail.com"

Avicii - Atlas (Avlnce Reboot)

Avicii - Change A Thang (Jamy Edit)

Please also visit my YouTube channel at https://www.youtube.com/channel/UCwqADlZkYPSm8KtkAlmLsgA

FLP: https://gum.co/VIhWT

Avicii - I'll Be Gone (Avicii By Avicii)[Official Audio]

Óc Cức