What does the line " shall we beguile their limbs with mellow flute" mean

The feeling of anger for the fact that what ever it is that has been going on needs to stop, and it's not fair to do the hard work when others will took it away(we shall not always plant while others reap)
but then again, sometimes you just can't do anything about it because if the others are stronger you can only say how you feel but you just don't have the power to stop the unfairness (so in the dark we hide the heart that bleeds, and wait, and tend our agonizing seeds)