I like the idea of the 1812 Overture, with a full orchestra, along with the cannon and fireworks. I can’t decide if my ashes should be shot out of the cannon or the fireworks.
I’m in an acoustic band and play in various jams. Not at all religious, and no desire for a “funeral” per se, but I would like some sort of gathering where my friends and family got together and played music. No specific tunes in mind, but would probably include a number of bluegrass/gospel tunes such as Ain’t No Grave Gonna Hold My Body Down.
Gwar’s “Sick of you”
Same, but if there is one, they should play “Love the One You’re With.”
Born to be Alive – Patrick Hernandez
“Yes, we have no bananas” by Spike Jones & His City Slickers. Just to remind everyone in attendance that they never really understood me.
Eeeeeeew. 
My uncle (my father’s brother) passed away back in December, and his family had a memorial gathering for him a couple of weeks ago. There was no burial, as my uncle had stipulated that his body was to be donated for medical research.
At the gathering, one of my cousins, who had been in a bluegrass band for many years, played a few songs, along with two of his old bandmates. In tongue-in-cheek recognition of my uncle’s bequest, one of the songs which they played was John Prine’s “Please Don’t Bury Me.”
Along the lines of the other “play”, I’d like my golf buddies to play a round or 2 at some of the courses I played the most, and - if I have myself burnt - scatter my ashes.
But my preference is to hang out at a body farm. Always liked the outdoors! 
When Mr. Celtic Knot’s grandmother passed away, the entire family gathered for the viewing. One of her great granddaughters (about 3 yo) decided we should play the Hokey Pokey. So we did. We figure Maxine would have played, too.
Pinochle. That’s what grandfathers and uncles all played at Shiva.
CelticKnot, that sounds like the sort of thing my family would have done. After my grandpap’s funeral, we took his favorite easy chair (that was so broken in that nobody but him was capable of sitting in it any more) down to the parking lot, soaked it in kerosene, and burnt it. Afterward, all of the guys went out target shooting.
For me, bagpipes. I’ll leave the selection of the tunes up to the piper, but there’s got to be bagpipes.
My brother is a priest and he tells me he’s lost count of the number of times he’s had, politely but firmly to advise the bereaved against Smoke Gets In Your Eyes at the crematorium.
For myself, I have quite a list of suitably melancholic pieces of classical music but I’m leaning towards
Wish Me Luck As You Wave Me Goodbye
He’s Gone by The Grateful Dead.
No love for Wham!?
How about a little Wake Me Up Before You Go-Go?
Ping Pong. Based on the trend of my weight, I estimate the size of my casket will be roughly right for that.
Pre-game: Simple Man (Skynyrd, not Charlie Daniels)
Opener: Dixie
Mid-show: Immigrant Song
Closer: Free Bird, with a shot of Jack for the guests.