What is the Hitachi company song?
I'm looking for:
  (1) audio file of the Hitachi company song sung in Japanese; 
  (2) written Japanese lyrics;
  (3) Hiragana version of Japanese lyrics; and
  (4) English translation of lyrics.
As a bonus but not required, I would like to 
know if the various Hitachi-related companies 
such as Hitachi SAS (Hitachi Software and Services) 
have their own company song, or do they use the 
main Hitachi company song?

If you can read Japanese, Hitachi's "Shaka" is posted in this webpage:

http://www.hitachi.co.jp/sports/baseball/special/cheering/cheer.html

By the way, I always thought Hitachi's company song was that catchy
"Ki ni naru ki" which is used in some commercials in Japan. You can
see this song in this webpage:

http://www.hitachinoki.net/tv_cm/song/index.html
http://www.hitachinoki.net/tree_info/index.html

I hope it helps.