My favourite birthday song is a comedy song from the time... beginning of the 80's - which was really played again and again on birthday parties that time... and as I was a little rug rat I loved it... and still do so today 😃 Fred Sonnenschein* und seine Freunde / Fred Sunshine and his friends : Alles Gute zum Geburtstag / Happy birthday and all the best
https://www.youtube.com/watch?v=lRbcT-o_a6w
it is not customary for us to sing birthday songs, but if you celebrate in a karaoke bar, then it is accepted. but personally, I like it when a song is sung about a hero with the same name as the birthday boy. this is also a good gift in its own way)))