Mr . of Justice is asking questions about Apple 's business practices . DOJ investigators have interviewed executives from the four major music labels and several digital music retailers about how Apple wields its iTunes influence . Investigators want to know whether Apple has used anticompetitive tactics . Apple 's website accounts for 80 percent of all digital song sales .
Mr . of Justice is asking questions about Apple 's business practices . Investigators want to know whether Apple has used anticompetitive tactics . Apple 's website accounts for 80 percent of all digital song sales .