Which musical instrument do you wish would totally disappear, along with every recording of it . . . never to be heard again or reinvented, or even remembered?
At the top of my short list would be bagpipes. They sound like cats being tortured. I don’t know why they’re played at funerals; haven’t those people suffered enough?
I’ve heard good bagpipe playing - its beautiful stuff - problem is it is also exceedingly rare.
The harmonica. There is no fucking reason for a harmonica to ever exist.
Wow. No. I like bagpipes.
Does autotune count as an instrument?
And lay off the bagpipe. They’s beautiful.
The Ocarina
Simster has the right of it. When played well, nothing beats the bagpipes.
Unfortunately, I’d choose bag pipes too, just so I’d never have to hear the bad players again.
Bassoon. Oh Jebus, please take back the Bassoon. 
The Pandemonium, Left-Handed Sewer Flute, or Tromboon.
Watch what ye say aboot the pipes, laddie.
But, I have argued that they are not musical instruments, but actually weapons designed for psychological warfare. Still makes my heart race to hear them.
My choice? Does anyone actually need a bassoon? Would anyone miss them if they were not around
Boo on you! Harmonicas are awesome.
Personally, I could probably live without the didgeridoo. Or the jaw harp.
The guitar
Yes! The one that belongs to Chad Kroger of Nickleback.
I don’t think there is a kind of instrument in the world I would do this to.
The bowed psaltery. To my ear, it is in about the same class as the musical saw.
I heard a street musician in Prague play the Pink Panther theme on a bassoon and he kicked ass.
the Vuvuzela
Well, I’d miss The Rite of Sprint, Peter and the Wolf, and Rhapsody in Blue, none of which would sound quite right without the bassoon.
“Are you listening to me Peter?”
“No, grandfather, I can’t hear you. It’s like you don’t even exist.”
On the other hand, what about kazoos? I saw some pink, plastic kazoos back in December and almost bought a couple for my nieces (3 and 6 years old). My brother’s family was visiting for Christmas and I figured I could hand them out right as they boarded the plane back home … you know, just to see my brother’s expression. I was afraid of the retaliation though.
There’s a fine line between a musical instrument and an instrument of torture . . . and the vuvuzela has crossed that line. I’d actually prefer bagpipes.
I say the bagpipes. The only thing they’re good for is Amazing Grace, but I think I can live without that.