Terry McGee playing the whistlebag! 
http://www.mcgee-flutes.com/boxwood_2002.htm
Didnât the bagwhistle thread have itâs run within the last few weeks?
Must have missed that one. Sorry.
I guess it depends on which of the two is doing the nailingâŚ
I know where my sympathies lie! 
That is so funny! To think of tuning anything to a whistle! 
Thanks for sharing that.
Whoâs the man? (am I showing my ignorance?)
Showing my ignorance: why not tune to a whistle?
⌠because whistles are proverbially out of tune. Even if you get one that can be played in tune, it is very easy to blow it out of tune.
And you know the old joke:
How do you get two whistlers to play in tune?
Shoot one.
Ah, that makes a lot of sense. I wonder why they use pitch pipes then.
Different animal.
Hmm⌠like democracy, proverbially the worst system if you only forget all other woodwinds.
Ok, I just mixed metaphors, now Bloomenheimer should get spanked for transposing an old joke originally told about fiddlers/alti/banji (1 banjo, 2 banjeez!)/bombardes/bagpipes/brasswinds⌠etc. 
PS: How do you call two XXXXX ( <â replace with your faved scapegoat instrument 
) players playing in unisson?
A major 7thâŚ
Thatâs rightâŚduh, pitch pipes have some sort of reed, donât they, they arenât whistles.
All this stuff about âdifferent notesâ can be a bit confusing to a percussionist.
So does an orchestra often tune to an oboe because it has the most stable tuning?
No. Because it has the brightest sound and can be hear best.
Some say, btw, that the tradition of tuning to the oboe is partially responsible for the rise in âconcertâ pitch in the last 200 years from about 405 MHz to 440 MHz: the oboes like tuning a little sharp: makes them brighter and prettiers. The fiddles, of course, donât care or like tuning sharp, too, and the brass is left wringing their hands.
So thatâs why all our TVs go on the fritz when that blimminâ oboe-ist down the road starts up!! 
Theyâre playing in the UHF band!
After warming up, the oboe tunes to the piano first.
Sorry, guys, youâre drifting OTâjust as expected and freakinâ usual.
The original question was:
Whatâs a cross between a whistle & a bagpipe?
Presuming weâre talking Highland Pipe here, I submit:
How do you find this stuff, Zoob?
I think Zoob lives in some alternate dimension (dementia?) and just visits here occasionally.
The scary thing is that his current avatar suits him so well . . . even his most bizarre posts still have a surreal, Marx-brothers-like logic to them. 
Tasty, definitely and refinedly. I was weaned on buckswheat.
I resend this: same to ewe, belly!
Baaa!!! I laugh at your pitiful insults - Iâm a wide and woolly sort of guy! 