My family "culture" does memorial services, rather than funerals, and we tend to sing the Dearly Departed's favorite, whatever that is. When doing funerals in other (not my own) ethnic groups, I am always deeply moved by Amazing Grace.
But remember the (sorry) Star Trek where they think that Ensign Ro and Geordi are dead and Data has to plan the memorial service, and he does it à la New Orleans? Now that is how to celebrate life rather than mourn death!