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What it does? A quarter tone? The slide is smaller then the second valve slide...

Steve McGovern wrote:I stumbled across the manufacturer's website one day - can't remember the address any more. But they described the 4th valve as a high pitch/low pitch switch valve.

How convenient!

I see half their valve and slide trombones are high pitch. India must still have a high pitch scene. Ouch. Maybe someone could buy up all the high pitch horns on fleabay and pile them up on a boat bound for India, and sell it to folks as step ups from their locally made stuff.

Steve McGovern wrote:I stumbled across the manufacturer's website one day - can't remember the address any more. But they described the 4th valve as a high pitch/low pitch switch valve.

Well, that fits the length, but how the heck do you operate the thing? Do you hold it down with duct tape when you want to play low pitch?