Greedy little piggies

Remember "Another Brick In The Wall Part 2?" You know, from Pink Floyd's The Wall? Great track from the first side of the first platter - had a dark disco feel to it; danceable yet ominous? If not, then you've never happened across a classic rock station and may resume hibernating now. In any case, the children who sang on the track are now all grown up and demanding back royalties.