This is the second mashup I made with David Bowie's Space Oddity.
(the other one, with Calle 13 see here)
It features Rihanna's Russian Roulette as the main music, mixed with Fever Ray's dark and ominous If I had a Heart:
Odd Russian Fever:
David Bowie - A Space Oddity (vocals)
Rihanna - Russian Roulette (music)
Fever Ray - If I Had A Heart (vocals/music)