 On the right of the Guru Granth Sahib, musicians with harmoniums, tabla and other musical instruments sing hymns from it.Both men and women can lead the congregation in prayer or singing hymns from the Guru Granth Sahib.Ardaas is a prayer performed by Sikhs to thank Waheguru (the Almighty) for all that he has done and to pray for the welfare and prosperity of the whole universe.