Trying to run redis and resque scheduler as part of a rake task

I want to run redis and redis-scheduler from a rake task, so I do the following:

namespace :raketask do
  task :start do
    system("QUEUE=* rake resque:work &")
    system("rake redis:start")
    system("rake resque:scheduler")
  end
end

The problem is that redis starts in the foreground and then it never starts the scheduler. If it does not start in the background (using &). The scheduler must be running AFTER resuming operation.