I claim the everyone needs to sing the national anthem.
Firstly, in the Philippines the national anthem mostly represents peaces and tells people not to fight. When I heard our national anthem in Philippines I felt that I needed to respect my parents and not fight my cousins and have mercy on other people. “Tagalog bayang magiliw perlas ng silanganan alab ng puso sa dibdib mo’y buhay Lupang hinirang Duyan ka ng magiting sa manlulupig hindi ka pasisiil” this is the end of the anthem, in English it means “people be friendly and brave”.
Secondly, because you are part of that country you need to sing the national anthem. Because I moved to the New zealand I need to sing the New Zealand national anthem too, like others.
Thirdly, singing the national anthem makes people feel like they belong to the country. when I moved here I felt that I belonged in here as well like other people in New Zealand because I sung the anthem and i’m still practising it.