It's the Old Boys Old Girls (OBOG) Wind Symphony from Singapore, made up of alumni members from secondary schools, performing this really fine 'Starlight Overture' by Rex Mitchell (1929-2011) who wrote many such works for schools and universities.
So theres no commercial release...?..too bad...i think its a great theme and worth a recording...I wonder that no one here seems to bother...cause it sounds just like a very muscular scifi theme.in the same league as Last Starfighter or Battlestar Galactica..