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Name those bikes you reckon you could play a half decent tune on to keep your spirits up whilst waiting for the emergency services.
We've already had the orange 5 from a couple of other threads but I would like to offer up....
(Drumroll)
90's Saracens XTort with cheap triple clamps and vee brakes.
Hope mono mini on any bike.
The hollow spokes on my Mavic crossmax’s hold quite a good note.
Hope freewheel
Old GT LTS with squeaky bushings.
Avid elixirs in the wet with sintered pads. Bonus points for different sized rotors to change the pitch.
Slingshot, innit.
I'm sure you could get a tune out of an Allsop Softride too, come to think of it.
Uberbike race matrix pads on the front of my Solaris in the wet!
Any Shimano brake with a slightly leaky caliper.
A companied by the internal cable rattle beat.
once overtook a fs carbon whyte, that was the loudest echoey thing ever (and the going wasn't even that rough), could never had ridden it would have driven me crazy.
My old Saracen Addition DH.
Some of the carbon wheeled road bikes going down my road put out a pretty good rhythm. I can hear some of them in my living room.
I’ve managed to get my Hope brakes to sound exactly like an old Police siren!
Any of the carbon Trek Y-bikes. Looked like the scaled up body of a Gibson Flying V.
A ballbearing, superglued to some fishing line, which in turn is superglued just inside the bottom your friend's seatpost, so it rattles away inside the seattube. Just WHERE IS that noise coming from?
The Romic coil shock on my old Ellsworth Joker made a lovely “swoosh-puchurrr” type noise compressing and rebounding. I thought it sounded class but perhaps there was just a bit of air in there..
Tioga disc drive.
As an enhancement to the offerings above may I suggest:
and Accelomemer
I once had a fair bit of fun at CyB with both until I realised just how f*****g annoying both of them are.
Those old XT rim brakes with the parallelogram linkages. Squealed like pig getting ****ed by an elephant.
When riding gravel out of the seat on my fatty I can get the marching from the beginning of Holiday In The Sun with each pedal stroke.
90's Marin Quake. Like a one man band with amplified creaks, rattles and mishifts.
Massive box section mainframe with downtube mounted cables.
Added bonus of a top tube bottle mount, to catch sensitive parts. The rivnuts would come loose and also rattle.
San Andreas? 
Moving to Montana Soon?
Any steel framed bike. As you lay there in pain waiting for help you can flick the frame and get a lovely ting noise. Different tubes produce different pitches. For even more range you can use your other hand, if it’s still attached and working, as a damper to alter the tones. Simply hold the frame near to where you flick it.
True story* I once played the entirety of The Planets Suite by Gustav Holts whilst trapped underneath a 2012 Cotic Bfe.
Steel is real!
*might not be true
All kept in time by the metronomic click of a sturmey archer 3sp hub
In theory you could tune 12 spokes on a wheel to an octave of notes. In fact surprised nobody has done it (they probably have but I can't be bothered to search)
If you are tuning spokes, then you could get them to play a tune if you spin them and flick each one as it goes past. Tune the other side of the wheel differently to play the B-side.
To get a more interesting rhythm you will need a custom lacing pattern.
The tangle of cable outers on my old Claude Butler would whistle whenever I cycled with the wind coming from the side.
The background hum of tyres on road...
A ballbearing, superglued to some fishing line, which in turn is superglued just inside the bottom your friend’s seatpost, so it rattles away inside the seattube. Just WHERE IS that noise coming from?
That's genius 😂 but clearly wrong!
No votes for the Slingshot?
Or if that’s too much e-cheating by using delay loops, then how about something more stripped back and classical, from Takafumi Suzaki
It's an oldie, but... Rocky Mountain Instinct?
https://www.pinkbike.com/news/wade-simmons-samples-the-rocky-mountain-instinct-video-2013.html
The background snarl of Schwalbe Ice Spikers on tarmac, followed by the soft silence on hard packed snow.
On Youtube, all e-bikes
Pick any German e-bike vid, and play it with auto-translate enabled, and it often detects the whirr of the motor as "[music]" and the chatter of the tyres over gravel as "[applause]"
Any bike Sam Pilgrim rides / maintains.
It amazes me he gets bike sponsorship they all sound like a bag of spanners.
In theory you could tune 12 spokes on a wheel to an octave of notes. In fact surprised nobody has done it (they probably have but I can’t be bothered to search)
I seem to remember there was an app which used the 'note' of a spoke to work out the tension.?
If you are tuning spokes, then you could get them to play a tune if you spin them and flick each one as it goes past. Tune the other side of the wheel differently to play the B-side.
Great idea, you could then fit a 'hammer' to the fork and get a continual tune going as you ride and sound a bit like an ice cream van. The wheel may not be that great though.