I'm almost finished, and I used:
Take That - Wiley
???? - Joy Divison
Triumphant - Royksopp
and will use:
Overture ???? - ????
When the artefact got destroyed, I tried to put something more emotional in "Triumphant", whereas when I started in the first place and I was raring to go I put something more upbeat in - "???." The end, when the artefact is finished, I'm going to use "Overture ????" because it's very dramatic and therefore will present the final finished piece in an exciting, OTT way.