Such a stupid question and it seems you prefer to eat for free. you sing once and get merit from it then there is no suggestion to do it a second time. You know all the active newbies here are being helped with merit and they are being motivated so that they can work properly in this form.

Note: If you want to get a lot of merit and increase your rank then help the second person here with your skills. Keep in mind that merit is managed on the basis of your skills and merit is not available for free