Resolve 'UNKNOWN' artists, now 'Unidentified'

[ross-spencer]

Related to #2. There are a lot of UNKNOWN artists that I think we can resolve (maybe!) a good example is Battle from Gladiator, by Hans Zimmer.

Big Arm on his Ship feels like an anomaly, or a mission comment not a song though the mission was responsible for Canada Arm 2.

From the STS-101 mission the song seems to be:

"My Destiny"

And is noted as having the final lyrics "i want to fly find my blessing is in the sky"

But lots of gaps to fill in...