A bit of background information from a fellow Dane.
In my country there is a tradition to throw parties for family and friends at baptizing, round birthdays, weddings and wedding anniversaries.
Its also common to hire an 'organ' player for these occations to play and sing. Not so long ago playing 2 keyboard organ with foot bass and built in drum mashine. You know what I mean. These days probably arranger keyboard.
Those musicians are nicknamed soup, roast pork and ice cream musicians as this is the menu normally served at those parties.